Its very simple, when logging onto windows have some Mr Sheen in your hand. Spray it on the screen and wipe it back and fowards this should unblock the site for u.
Mr Headmaster, February 2008
you can only try
joe, February 2008
Don't ask!
Blocker, January 2008
edit
I can answer this question...
how do i unblock a site that has been block by my school?