stupid question, but have you checked the rio page for compatiblity issues with 2k? also, check to see that you have dma enabled and also check in your software to make sure you have a high burn speed set. also, are you daisy-chaining the burner and your hd with win2k on it? in other words, do you have your burner and hd on ide 0 or are they mixed between 0 and 1. also, make sure you have the latest intel ide bus drivers loaded for the fastest transfer times. also, check with your burner's page for compatiblity issues with 2k and/or a new firmware update, etc. wow, that was alot of also's. anyway, see if any of that helps.
J