Thanks for replying. The multiplyer unlock is important to me because I don't like overclocking my pci/agp bus. I've done some overclocking in my time and I have decided I would rather have stability than not. I've played around with my 1700+ and gotten it to 1900+ but would have explorer lock up. Not shure yet if it was caused by somthing else. I will wait until I'm shure my system is as stable as it can get and try again. Doesn't seem worth instability to get 115 fps over 101 fps.