I know what a proxy is but it's hard to explain...
a proxy is something you go through on your way to the internet. It makes you have an alternate IP.
Here is a list of proxies:
http://www.proxy4free.com/index.html
To use a proxy (In Internet Explorer 6):
Go to Tools -> Internet Options
Go to the Connections tab
Click on the LAN Settings button
In the Proxy Server box, check "Use a proxy server for your lan"
Type in the address and port of a proxy you got from that list of proxies
Hit OK a few times, and you should be smooth sailing.