[mPulse]

If you've a computer at home that's always connected, use something like www(dot)logmein(dot)com to remotely access that computer's desktop

Or install a program like hamachi (www(dot)hamachi(dot)cc - also from logmein) to setup a vpn between ur uni pc and home pc, then use ultravnc to connect to it. One really nice thing about hamachi is that you can file and print share with your home computer, and also connect a load of computers up to its network.

Hamachi handle's the tunnelling itself by using a "server assisted NAT-traversal technique".....if it works dont fix it.

Otherwise, the logmein (free version) is the way to go. You need to install it on you home pc first obviously (as with hamaci and ultravnc), then in college you just load a small java app into your browser.