I need to know if there are any setup changes to 64 bit XP for VHE and BC.

I am having issues getting them to work at all, much less the functions (like models showing up) working

64bits windows has more problems then actual benefits when used with older 3d programs or games.

-->Are you sure have all the directX components and 3d acceleration turned on?<--

I've had a buddy who also felt the need to run a 64bits Microsoft OS and after many things trying to get 3d apps and games to run on it without crashing or bugs, he finally went back to 32 bits (after some persuasion)

I'd personally go for a dual boot system 32bits for older programs (like hammer and goldsrc) 64bits for image/video/newgames or something, if I felt the need to run 64bits windows This way you can benefit from both worlds with less stress, because your older program doesn't work as it should. (just my opinion though)

I couldn't get the models to show up on 32 bit XP anyway XD That's what bothered the micky outa me