Hi there. Yes, you need to supply 5v. I think I did it with a battery and a 5v regulator (the 7805 if I recall correctly). I programmed the pic18F2550 with it. I needed the 18f2550 for the gtp USB lite programmer but as the guys say, the driver only works in windows XP. it doesn't work in vista or windows 7.
Good luck with your project!
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