PHP on Windows 2003
None
If you are having problems getting mssql_connect() to work in PHP and you are running Windows 2003, you should replace all the ntwdblib.dll with one from Windows 2000.
This is because the ntwdblib.dll in Windows 2003 has strict permission issues.
The one that worked for me is dated Sunday August 06, 2000 and is 268 KB.