i downloaded a program one time but never used it, it was called "universal sim card unlock", maybe do a search for it, i think i got it on limewire, but better watch dl'in programs on there, definately run it through a virus scan
just found this also, looks official, check it out and let us know whatcha find.............. Unlock cell phone, cell unlock
I have a friend who use to do it a couple years ago when they just started coming out with mp3 phones but he got in a lil trouble so he stopped doin it