Thanks KenL,
I'll check with pu82. There is a reason I am considering adding a 2nd drive rather than just replacing the current drive with a bigger one. Actually I have already replaced the 80GB drive with a 100GB drive. Yeah, I know, not much of an improvement on available space but that extra 20hours did help. Now I plan to add the original 80GB drive back in as a 2nd drive or add a 120GB drive that I have on hand. Besides the power cable, the hold-up is that I will have to save all of the programs off to other storage (DVArchive'ed to PC) so I can clear the MPG partition during the patch process.
A single 200GB drive might be inexpensive to some but when I already have two drives on hand, it seems senseless to me to buy another bigger drive. Funds are tight after buying the 4508 and activation. Plus I'm in the process of building a new faster PC and my funds have been dried up for a while. Also those big 200GB or 250GB drives are most likely to be 7200RPM (ie hotter) drives.
I can probably kludge the power cable together myself but want to see what is available. Oh, and I did not realize that the person who mentioned the cables was a commercial dealer. I had assumed from what I had read that he/she was just someone who had figured out a way to make these cables and was willing to help out other RTV owners. - SloPoke