i have been looking at virtual private networks. and is it true that if you have a virtual private network your isp cannot  see what you are doing online. with proxies your isp can still detect how much data you use. but with the virtual private networks they cannot see how much data your using right? so would this let us download as much as we want and xtra won't be able to detect how much data we use so we will have unlimited downloads? i am referring to this virtual private network software here:

http://www.download.com/Primedius-WebTunnel/3000-2144_4-10533847.html?tag=lst-4-3