Well, yes there are occasionally problems with cracks working under W95/w98/Me and not under W2000/WXP, and vice versa. I notice the game is getting close to two years old and is protected with Securom. Problem is, I know that there was an Unsecurom unpack program, that produced executables that will never work under W2000/XP. It seems like this is one of those. Your only options are 1) hoping one of the resident crackers takes pity on you and tries to correct the crack, or 2) Use CloneCD/Daemon Tools/Alcohol120% to make an image of the ORIGINAL cd and mount that. This last option will always work, but you need of course the original cd (and no doubt you've got that,
right ?). Or option 3) Dual boot to w98 each time you want to play the game.