Overdrive is working perfectly fine for me under Windows XP x64, XP MCE and Vista x32 :D . I'm using Overdrive v2.10 (but in OD itself it says v2.09). I have oced my X2 6000+ from default to 3500MHz easily in windows :) . I must admit that Overdrive doesn't like CPU-Z or other advanced information tools in background though. Sometimes it will simply hand up. Other than that it's perfect. Thanks to it I can now set my vCPU form Win and save power when browsing internet :D .
PS. I'm on F2i BIOS :up: !