Unknown Windows version with Win2k

[HTS-500]

I think the problem is pretty self-explanatory.. I'm getting this error with a Windows 2000 Advanced Server OEM CD, nLite told me to report it

What does it check for to determine what version of windows is it?

Edit: By the way, it's nLite 1.4.5b2

Edit 2: OK, I thought it was Advanced Server... It isn't. It's just Server... I got CDROM_IS.5, CDROM_NT.5 and cdromsp4.tst

Edited April 13, 2008 by HTS-500