... I'm afraid you'll probably have to live with it. Switching from hardware 3D to software 3D has often been reported as one step in getting the games to run under WinXP.

It's understandable, if you think about it. In terms of the speed at which computers have advanced, these are now pretty old games. It's to be expected that the coding of the game engine will become steadily less compatible with modern hardware and drivers as time goes on.