Correcting invalid default ISAPI extension paths

I ordered a server from ServerBeach.com which comes with an installation of
Windows 2003 Standard.

Everything was configured properly except for one thing: the default paths
for ISAPI extensions, such as the preconfigured ASP/ASP.NET

The server automatically assigns the path to
C:\Windows\system32\inetsrv\ASP.DLL

The problem is that this isn't where the file is. C:\Windows doesn't exist
at all, Windows is located at C:\WINNT

Every time I make a new domain on IIS, it gets the Windows directory. I have
to manually correct it each time I create a new domain.

How can I globally fix this problem to insure it doesn't happen again
without reinstalling the OS?