Thanks for replies.
XP is fine, Win2000 SP4 Pro not. Because im using same binaries, it wouldnt be problem with game configs, only something with Windows 2000 settings, drivers.. my guess is really some *.dll, *.vxd mess or some special behavior of these games on Windows 2000.
I dont really know how exactly is OpenGL initialized.. what Vampire Masquerade do by other way than Quake 2/3 do. I would help to know that these games are working with other ATI cards for other people.
Desktop is already set to 32bit, so problem is elsewhere..
BlackWingCat - well, lowlevel magic. Im not near this level of hacking, i planned to start with quite vanilla Win2000 let these for later.
Otherwise my setup is not ideal, its second keyboard/mouse on my table.. and that machine has fanless PSU, that i hate.. and even when i tried to use some better fans cpu fan could be better too. I also had problem with modern screen.. my LG 27 144 IPS monitor has not analog inputs.. when i use Radeon DVI to HDMI input on monitor, im getting picture only for boot and some lesser resolution, otherwise black screen, when im using tome ATEN 1600 VGA to DVI adapter, its working when i force maximal monitor resolution to something resonable - 1600x1200 or something.. otherwise then is autodetected, im getting only blinking.. and when gpu drivers are reinstalled monitor is redetected to some incompatible resolution.. so i have to move machine to other room, with other monitor to fix it. WinXP i managed to do it through Anydesk remote desktop, because it seems that even with older Teamviewer 8 portable is now possible to connect older machines, because some security protection crap. With Win2000 is even more problematic.. Anydesk has probably not Windows 2000 version, im not sure if Windows 2000 have something like Remote desktop server, or only client.. so i would have to using probably some awfull VNC or something like that..
Im old goal oriented goatman, i care about facts and freedom, not about egos+prejudices. Hoarding=sickness. If you want respect, gain it by your behavior. I hate stupid SW limits, SW=virtual world, everything should be possible if you have enough raw HW.