My brother just installed Aces High on his Win2k box.  It works fine offline, but it seems like every 3rd or 4th time he starts Aces High, he gets a hard lock up.  The screen starts to turn blue, as if to show a BSOD, but the screen is only the top half blue, bottom half black.  THis is a *hard* lock up requiring the CPU to be power cycled.  Any ideas what's going on?