I got the full version today (yeah!) and I"m having a few graphical annoyances. First,in the menus, the mouse will leave a square block where I clicked last. Second, while in the game, if I press Esc to go to the desktop, then return to the game, it badly distorts the text on the screen. I don't know how to recover it, except to exit the game and restart it.
My specs:
P3-650
Voodoo5 5500
384 MB SDRAM
Intellimouse Explorer
nothing overclocked. I've tried disabling the Intellimouse software, and tried changing the windows color depth from 32 to 16 bit. I have all the latest drivers for everything (I'm stickler on that stuff).