My computer crashed just before Christmas last year and I am just now getting around to reinstalling my games. I reinstalled RCT3 with no problems, and then when I put in disc 1 of the Sims2 - nothing happens. It won't work in the cd drive, and it won't work in the dvd drive. It will however work on another computer. Not only that, disc 1 of a friend's copy of Sims2 also won't work on my computer. When I put in disc 2,3, or 4, it asks me to put in disc 1. The strange thing is, it sees all of the files on the disc. I've already tried running it from the desktop and that also didn't work. I also tried to manually run the disc with no luck. I am running Windows XP Professional. There are a couple of changes since then. I now have SP3, and have since had to purchase a new Pioneer dvd burner. That's not the problem though because as I mentioned earlier, other games install with no problem. I have the PC version of Sims2, not the dvd. My graphics card is an ATI Radion, but as I mentioned before, I've played Sims2 on this computer before. I also tried disabling all emulation software, and I even tried disabling all drives except the one the cd was in and that didn't work either. I have searched every where for an answer to this problem with no luck. I hope there is someone out there who can help me!