Sorry if this is in the wrong section. This is the method I use whenever I need new IPs ie Craigslist, eBay, etc. You need an iPhone (either the original or 3G) If you've got a jailbroken iPhone, download PdaNet from cydia. If not, google quickpwn or winpwn to jailbreak your phone. Once installed, setup an ad hoc wifi network on your computer and connect your iphone to it in the wifi settings. Start up PdaNet and it will automatically configure itself. You are now online! To change IPs, simply open up settings and turn on airplane mode for about 5 secs and then turn it off. When you reconnect (should happen automatically), you'll have a new IP. Let me know if this works for you and thanks for this great forum.