I don’t know if you agree with me, but I hate university’s lab workers(so called “experts”) and their restrictions. When you want to surf the net (in our University) you must logging in again with another password when you open Firefox or IE; then you can only visit some sites otherwise your account will be blocked… So try this. Open Windows Calculator(Accessories–> Calculator) then right click on the window’s border and hit PASS TO URL: now you can visit all you want without loggin in!
If you don’t understand look at these videos:

Enjoy!