Ok. I have read a lot about The Sims working on Windows XP, but I have also read a lot about them not working. Does the game work or not? I had this problem with Rollercoaster Tycoon. I read that RCT worked on XP and I read that it didn't. I installed it, and for me it didn't work. Yes, I am the administrator. Yes, I have a legal copy of XP. There are no problems on my computer, and that is a fact. I just formatted the hard drive and reinstalled 98, then upgraded to XP. I have no illegal copies of anything. I just wish to have a simulation game that works on my computer, and The Sims is the one that i really really want. But I am completely unsure if I should spend the $45 to get it or not. Those that respond, thank you for your time and help.