Hey I didn't even write that one advertently so, LOL... BTW HexenRPG is the official name of a project that's been started in '96 and stopped a couple of months later before getting to public release, check out the "gameplay mods" page in the Hexen section.
Wow, never knew someone started a port for Dark Forces, I mean source was never given out. As for Strife, the only one I know about is Vavoom, I don't see why it shouldn't work on WinXP, but go to
http://forums.vavoom-engine.com and make there a feedback or bug report and your problem might be taken care of.
Anyway, the best way to play old DOS games is in real DOS... when I first got Win95, I realized within weeks that the new DOS 7 is just so much crap and thus kept my DOS 6 disks up to this day. [img]images/smiles/icon_eek.gif[/img]