Can't figure out how to install sql server for PHP

I am trying to install SQL Server for PHP on a server with Server 2008 32 bit.  The exe from http://www.microsoft.com/en-us/download/details.aspx?id=20098 keeps tell me that it is an invalid win32 application.  I've tried running as administrator as well.  Somewhere I read you need to open the exe with 7zip.  I was able to do that and see all the files in there, but where do I go from there?

Thanks

Mike