yeah I've done a few with lite-on drive.. it's a PITA and doesn't ever dump the key properly for me the first 10 tries and requires a ton of reboot/setup to get it right almost every time
it's worth it though to not have a red ring pop up randomly (dead xbox)
PITA until you find out what works for your PC. It's suggested to use the VIA chipset for a few of the drives, and using it resulted on me bricking a 360 when it grabbed a bad key.
VIA chipset works for me with one drive, the others I use the motherboard's Intel ICH10 chipset.
BCG is invite only, and bitgamer, but if you can get there they can't be beat. Fuck waiting days for a torrent to download from a public tracker.