Where can I get an ip scrambler?

Now please don't answer if you don't know what your talking about because the reason I never use Yahoo Answers is because nobody knows what the hell they're talking about. Now I have scoured the interwebz for an IP scrambler that constantly changes my IP but couldn't find one. Does anybody have any VALID links to a legit ip scrambler that works and isn't a virus? If so please post them. Don't post crap that you haven't used. Thanks