[The Sims 2] pet collection

HI I DOWNLOADED THIS SIMS2 PET COLLECTION FOR MY DAUGHTER BUT CAN'T SEE THE GAME, I DID PAY FOR IT THREW PAYPAL, IS IT THAT MY LAPTOP IS TO ADVANCED OR IS THERE SOMETHINK   I SHOULD BE DOING THANKS TRACY   I PICKED SIMS THREE ON BOARD BECAUSE I DIDN'T SEE SIMS2