Unfortunately i tried to get the software off these people, but like most, the "software" isn't for my iphone and they don't tell you that till you go into the members area ( after you pay ). Yet on the home page they tell you that it works with all versions of the iphone. I tried emailing them 3 times but i got no response so i tried to bring a dispute through PayPal to see could i get a refund, they never responded to PayPals emails either but here is the best bit my claim was DENIED by PayPal, and from the response i got from PayPal, all claims like mine would be denied because of what i can only describe as a loophole in PayPal's terms and conditions. So it seems these people have the perfect scam. If you ever listen to one piece of advice STAY AWAY FROM UNLOCK-THE-IPHONE.COM and like most mails say here you can get all the software free and with just a few clicks on youtube you can see a video how to unlock the iPhone, just remember there is no software yet to unlock the iPhone 3gs Version 3.1...Yet ;)
All the best.