Hello again,
so far so good. I managed to run both KotOR and KotOR II on Windows 7. KotOR II, however, required to be launched in WinXP comatibility mode, but they are running both. I installed older nvidia
drivers (Vista 64), and subsequently downloaded the new ones from Windows Update. There still many "why?" about this system, but after this KotOR runs. KotOR2 is a little bit unstable (hangs on "OBSIDIAN" display, but at least doesn't crash). Jedi Academy runs also, but I cannot get it to work properly in fullscreen mode. I have also tried SW "Republic commando" - works OK.