bigmacs

Hi there, my problem is that most of the programs (Windows Media Player, DVDx,...) can't find the dvd drive anymore. I think it has to do with the c2aspi.dll I've downloaded from adaptec. I've tried to install an older version (v4.6) from aspi, but doesn't work either. Can anybody help me make dvdx running on my Windows xp again? thanx, bigmacs