I am using Visual C++ .NET, and I was getting the error message:
"WinSock
test project error LNK2001: unresolved external symbol "int __stdcall
WSAStartup(unsigned short,struct WSAData *)"
(?WSAStartup@@$$J18YGHGPAUWSAD­ata@@@Z)
"

My code is as follows:

#include <winsock2.h>

int main()
{
 WSADATA wsaData;

 int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );

}

I went to msdn.com and didn't find it very helpful.

I was able to resolve this error by adding "ws2_32.lib", by way of
the project properties pages, accessing the "Linker" setting and adding
the library to the "Command Line" through the "Addition Options:" text
box.

Though adding the library works and I get no more errors for this
specific project. I need to be able to add to/modify the command line
text so that all future projects I do have a default access to this
library.

Above the "Additional Options:" text box there is an "All Options:"
text box which list the libraries and other included files but it only
lets you delete from it and not add.

Additional information:
Inside the "All Options:" text box is as follows:

/OUT:"E:\Documents and Settings\Juan\My Documents\Visual Studio
Projects\Test files\CreateProcess\WinSock
Para_Pass\WinSock_PP\Debug\WinSock_PP.exe" /INCREMENTAL /NOLOGO /DEBUG
/ASSEMBLYDEBUG /PDB:"E:\Documents and Settings\Juan\My Documents\Visual
Studio Projects\Test files\CreateProcess\WinSock
Para_Pass\WinSock_PP\Debug/WinSock_PP.pdb" /FIXED:No   kernel32.lib
user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib
ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib

I would like to permanently attach "ws2_32.lib" to this command line.

-thanks