Didnt you just ask this, but for the keygen. LOL! There might be some free converters.
try this link.
http://www.freedownloadscenter.com/B...-3gp-free.html
I havent tried any of these, but it might help you on your quest!
Good luck... umm... yet again!
I know you have xilisoft, but need a keygen... right?
LATE,
TWIN