My system: AMD XP 1900, 512 ram, Geforce4 440 MMX, SB Live 5.1, 2 40GB hd. Windows XP clean install. System has both ms intellimouse and a wacom graphire tablet. Both Sims and AOE II (Kings) crash upon startup. Both install cleanly, and you can even get to the setup screens. Nothing that I have done to date has changed the behavior: - video modes (640x480, 800x600, 1024x768) - depth (8, 16, 32) - compatibility modes (win95,98, ect) - safe mode drivers - latest Gainward drivers - reinstallation of DirectX 8.1 - running from Administrator account - disabling video acceleration, sound acceleration AOE supports all kinds of options - Nostartup, 800, Nosound, ect. None of them make any difference. Other games seem to work just fine. Examples: BattleZone, Grim Fandango, Lego Creator, Mattel Constructor, Starcraft, and others. Dxdiag shows no errors and seems to operate properly. All the tests pass. The odd thing is that I could swear that these games worked at one time on this box. Ideas? If this were Unix/Linux, I'd have a core with a stack trace and some tools. Anybody know if there is such a thing as a system call tracer (trace, tusc) for Windows XP?