hi everyone! i m a university student and in our computer labs there are so many restrictions on using internet like we can't open facebook,orkut and other sites including youtube etc and also we can't download mp3,mp4,wmv,etc formats....
sometimes ultrasurf and free gate softwares works for us but not every time..

so i am requesting any working software through which we can break all restrictions..tell me is there any software or not and if there are then plz give working software with free license...

and plz also provide tutorial to how to configure the software because most softwares are difficult to configure..so plz help me out....

i have heard from people that there are softwares who changes your original ip or proxy and connect you to internet through any other working proxy,,also provide information about this..that how they work....