yes it exists. you will need to either get a power coverter or to have the computer opened to get access to your power cable. as far as the IDE to USB, it's very simple: you just need to buy one. they are about 20$.
---------- Post added at 08:38 PM ---------- Previous post was at 08:36 PM ----------
DealExtreme: $11.93 HY Compact IDE to USB Cable with Power Supply Kit