I have tried downloadable proxies and they dont seem to work.Whenever I try to register for a website, say gamefaqs, it seems to detects my real IP immediately and not let me register.And web proxies are pretty much banned from every site, including yahoo, so im not able to register with those.
you need to set up the correct ip, i used to use a proxy called httptunnel, and what you had to do was assign particular port on the program say 365 and then link this with your internal ip and the ip of the proxy,
so you would assign a new port, 127.0.0.1:365 to the proxy ip myproxy.com:365
then tell the program to use 127.0.0.1:365 as its gateway.
if you have a particular ip ort you have been told to use by the proxy website, goto internet options, proxy, and enter the ip ort in the relevant sections and then test it.