thanksadvanced proxy manager. Google it.
I've spent hours and hours looking for one, and came up with this conclusion: the only option is to buy one.
Depending on what you need it for there's PacketFlip Proxies, IPGreen, IPrental, or getting a DSL connection.
And a lil heads up: learning to change your IP in an efficient and reliable manner will take some trial and error, so make sure this is what you want to do!
do you know where I can find the proxyfirewall tool? Their website seems to be routing to a parked domain