My myspace is blocked..how do i unblock it so that i can open myspace?

Sounds like it's a computer problem, not a myspace problem. Whoever is the administrator of your computer (an adult perhaps?) may have set parental blocks so you cannot access myspace. Or it may be the computer's firewall blocking myspace because of it's settings. If the firewall is set on high, it will pretty much block everything including myspace no matter what browser you use, IE, Firefox it doesn't matter. Try checking your firewall settings, if that's not the problem and you are a teen, then there is a good chance an adult put restrictions on the computer.