How Do You Override Your Schools Computer? I Want Go To Myspace, But They Blocked It! HELP!

There is a website, But it all depends on what school program is being used. Sometimes the website
https://Proxify.com works. (It's better to copy and paste the website.) If not, override it by finding out one of your teachers' passwords..

I need to now web site or something to get on myspace and other

I want to get onto myspace at school, but the school blocked it and I don't know the password to it! HELP!