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Question: World of Zoo crashes every time!

My daughter got this for Christmas. To our horror it does not work on her computer. I thought it was because her video was simple on-board video so I bought a 256 (game says it only requires a 128) and it installed this time and appeared to start but it crashes every time after the first credits show. Does anyone know why? Her computer runs Win XP 32 bit, has 4 gigs ram, P4 processor, 250 gig hard drive, very nice computer, only about a year old.