I have a Gateway GT5032. This model has a Foxconn C51GU01 motherboard, which as any other prebuilt system bios has all options locked out. I read on the internet that this board, the C51GU01 was a 6100K8MA-RS with Gateways options on it. Well, I took the plunge. I used Winflash to flash my C51GU01 with the latest 6100K8MA-RS bios, voila! All options are now unlocked and my system is performing faster with no problems at all... Anyway, don't risk what you can't afford to lose...but I've had nothing but success by doing this. Currently my stock X2 64 4200+ 2.2Ghz chip is running at 2.5Ghz stable, 230FSB with even more agressive memory timings than the Gateway bios had previously allowed. All in all, it's worked out great for me. I hope someone else out there can find this information useful... If anyone is unlucky enough to have bought a pre-built to begin with lol...