diff -prudN e:\Wine\dlls\winhttp/net.c e:\reactos-clean\dll\win32\winhttp/net.c
--- e:\Wine\dlls\winhttp/net.c	2013-03-16 11:54:52.602606100 +0100
+++ e:\reactos-clean\dll\win32\winhttp/net.c	2013-05-21 20:25:32.595598100 +0100
@@ -73,6 +77,7 @@ static CRITICAL_SECTION cs_gethostbyname
 #endif
 
 /* translate a unix error code into a winsock error code */
+#ifndef __REACTOS__
 static int sock_get_error( int err )
 {
 #if !defined(__MINGW32__) && !defined (_MSC_VER)
@@ -138,6 +143,15 @@ static int sock_get_error( int err )
 #endif
     return err;
 }
+#else
+#define sock_get_error(x) WSAGetLastError()
+
+static inline int unix_ioctl(int filedes, long request, void *arg)
+{
+    return ioctlsocket(filedes, request, arg);
+}
+#define ioctlsocket unix_ioctl
+#endif
 
 static DWORD netconn_verify_cert( PCCERT_CONTEXT cert, WCHAR *server, DWORD security_flags )
 {
@@ -344,11 +358,17 @@ BOOL netconn_connect( netconn_t *conn, c
         res = sock_get_error( errno );
         if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
         {
-            struct pollfd pfd;
+            // ReactOS: use select instead of poll
+            fd_set outfd;
+            struct timeval tv;
 
-            pfd.fd = conn->socket;
-            pfd.events = POLLOUT;
-            if (poll( &pfd, 1, timeout ) > 0)
+            FD_ZERO(&outfd);
+            FD_SET(conn->socket, &outfd);
+
+            tv.tv_sec = 0;
+            tv.tv_usec = timeout * 1000;
+
+            if (select( 0, NULL, &outfd, NULL, &tv ) > 0)
                 ret = TRUE;
             else
                 res = sock_get_error( errno );
@@ -442,7 +462,7 @@ BOOL netconn_secure_connect( netconn_t *
             read_buf_size += 1024;
         }
 
-        size = recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
+        size = recv(conn->socket, (char *)(read_buf+in_bufs[0].cbBuffer), read_buf_size-in_bufs[0].cbBuffer, 0);
         if(size < 1) {
             WARN("recv error\n");
             status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
@@ -754,7 +774,8 @@ BOOL netconn_query_data_available( netco
 
 BOOL netconn_get_next_line( netconn_t *conn, char *buffer, DWORD *buflen )
 {
-    struct pollfd pfd;
+    // ReactOS: use select instead of poll
+    fd_set infd;
     BOOL ret = FALSE;
     DWORD recvd = 0;
 
@@ -786,19 +807,21 @@ BOOL netconn_get_next_line( netconn_t *c
         return ret;
     }
 
-    pfd.fd = conn->socket;
-    pfd.events = POLLIN;
+    FD_ZERO(&infd);
+    FD_SET(conn->socket, &infd);
+
     while (recvd < *buflen)
     {
-        int timeout, res;
-        struct timeval tv;
+        int res;
+        struct timeval tv, *ptv;
         socklen_t len = sizeof(tv);
 
         if ((res = getsockopt( conn->socket, SOL_SOCKET, SO_RCVTIMEO, (void*)&tv, &len ) != -1))
-            timeout = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+            ptv = &tv;
         else
-            timeout = -1;
-        if (poll( &pfd, 1, timeout ) > 0)
+            ptv = NULL;
+
+        if (select( 0, &infd, NULL, NULL, ptv ) > 0)
         {
             if ((res = recv( conn->socket, &buffer[recvd], 1, 0 )) <= 0)
             {
diff -prudN e:\Wine\dlls\winhttp/request.c e:\reactos-clean\dll\win32\winhttp/request.c
--- e:\Wine\dlls\winhttp/request.c	2013-03-16 11:54:52.603606700 +0100
+++ e:\reactos-clean\dll\win32\winhttp/request.c	2013-05-21 20:05:12.642413600 +0100
@@ -2254,8 +2260,8 @@ static void free_request( struct winhttp
     CloseHandle( request->thread );
     CloseHandle( request->wait );
     CloseHandle( request->cancel );
-    heap_free( request->proxy.lpszProxy );
-    heap_free( request->proxy.lpszProxyBypass );
+    heap_free( (WCHAR *)request->proxy.lpszProxy );
+    heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
     heap_free( request->buffer );
     heap_free( request->verb );
     VariantClear( &request->data );
@@ -2446,16 +2452,16 @@ static HRESULT WINAPI winhttp_request_Se
     {
     case HTTPREQUEST_PROXYSETTING_DEFAULT:
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_DEFAULT_PROXY;
-        heap_free( request->proxy.lpszProxy );
-        heap_free( request->proxy.lpszProxyBypass );
+        heap_free( (WCHAR *)request->proxy.lpszProxy );
+        heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
         request->proxy.lpszProxy = NULL;
         request->proxy.lpszProxyBypass = NULL;
         break;
 
     case HTTPREQUEST_PROXYSETTING_DIRECT:
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_NO_PROXY;
-        heap_free( request->proxy.lpszProxy );
-        heap_free( request->proxy.lpszProxyBypass );
+        heap_free( (WCHAR *)request->proxy.lpszProxy );
+        heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
         request->proxy.lpszProxy = NULL;
         request->proxy.lpszProxyBypass = NULL;
         break;
@@ -2464,12 +2470,12 @@ static HRESULT WINAPI winhttp_request_Se
         request->proxy.dwAccessType = WINHTTP_ACCESS_TYPE_NAMED_PROXY;
         if (V_VT( &proxy_server ) == VT_BSTR)
         {
-            heap_free( request->proxy.lpszProxy );
+            heap_free( (WCHAR *)request->proxy.lpszProxy );
             request->proxy.lpszProxy = strdupW( V_BSTR( &proxy_server ) );
         }
         if (V_VT( &bypass_list ) == VT_BSTR)
         {
-            heap_free( request->proxy.lpszProxyBypass );
+            heap_free( (WCHAR *)request->proxy.lpszProxyBypass );
             request->proxy.lpszProxyBypass = strdupW( V_BSTR( &bypass_list ) );
         }
         break;
diff -prudN e:\Wine\dlls\winhttp/rsrc.rc e:\reactos-clean\dll\win32\winhttp/rsrc.rc
--- e:\Wine\dlls\winhttp/rsrc.rc	2011-11-24 17:55:02.335439900 +0100
+++ e:\reactos-clean\dll\win32\winhttp/rsrc.rc	2012-07-20 21:40:58.173741700 +0100
@@ -16,6 +16,12 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+/* @makedep: winhttp_tlb.tlb */
+1 TYPELIB winhttp_tlb.tlb
+
+/* @makedep: winhttp_tlb.rgs */
+1 WINE_REGISTRY winhttp_tlb.rgs
+
 /* @makedep: pac.js */
 pac.js 40 "pac.js"
 
diff -prudN e:\Wine\dlls\winhttp/session.c e:\reactos-clean\dll\win32\winhttp/session.c
--- e:\Wine\dlls\winhttp/session.c	2013-03-16 11:54:52.604607400 +0100
+++ e:\reactos-clean\dll\win32\winhttp/session.c	2013-05-21 20:19:52.231665900 +0100
@@ -100,6 +100,9 @@ static void session_destroy( object_head
     heap_free( session->proxy_username );
     heap_free( session->proxy_password );
     heap_free( session );
+#ifdef __REACTOS__
+    WSACleanup();
+#endif
 }
 
 static BOOL session_query_option( object_header_t *hdr, DWORD option, LPVOID buffer, LPDWORD buflen )
@@ -211,6 +214,11 @@ HINTERNET WINAPI WinHttpOpen( LPCWSTR ag
 {
     session_t *session;
     HINTERNET handle = NULL;
+#ifdef __REACTOS__
+    WSADATA wsaData;
+    int error = WSAStartup(MAKEWORD(2, 2), &wsaData);
+    if (error) ERR("WSAStartup failed: %d\n", error);
+#endif
 
     TRACE("%s, %u, %s, %s, 0x%08x\n", debugstr_w(agent), access, debugstr_w(proxy), debugstr_w(bypass), flags);
 
@@ -237,14 +245,14 @@ HINTERNET WINAPI WinHttpOpen( LPCWSTR ag
         session->access = info.dwAccessType;
         if (info.lpszProxy && !(session->proxy_server = strdupW( info.lpszProxy )))
         {
-            GlobalFree( info.lpszProxy );
-            GlobalFree( info.lpszProxyBypass );
+            GlobalFree( (LPWSTR)info.lpszProxy );
+            GlobalFree( (LPWSTR)info.lpszProxyBypass );
             goto end;
         }
         if (info.lpszProxyBypass && !(session->proxy_bypass = strdupW( info.lpszProxyBypass )))
         {
-            GlobalFree( info.lpszProxy );
-            GlobalFree( info.lpszProxyBypass );
+            GlobalFree( (LPWSTR)info.lpszProxy );
+            GlobalFree( (LPWSTR)info.lpszProxyBypass );
             goto end;
         }
     }
@@ -594,7 +602,7 @@ static WCHAR *blob_to_str( DWORD encodin
 
 static BOOL convert_sockaddr( const struct sockaddr *addr, SOCKADDR_STORAGE *addr_storage )
 {
-#ifndef __MINGW32__
+#if !defined(__MINGW32__) && !defined(_MSC_VER)
     switch (addr->sa_family)
     {
     case AF_INET: