You can use the different drives, but there's an extra step involved in there somewhere...not sure what it is though. I think...would have to check before you dive in. I've replaced a few, same drive for same brand drive. Swapping the actual drive out should take about 5 minutes. No different from doing it to your PC.
Check the XBox Scene page for more info. I'll look and see what I can come up with too.
The Walmart suggestion might work too...they take ANYTHING Back.
