free firefox 3How can i block a website for free on a 64bit vista with firefox 3.5?

i cant use that k9 on because im 64 bit, and i cant use blocksite because i have firefox 3.5, id prefer not to have any free firefox 3other accounts other than my administrator account, so i cant use parental controls so any other options?
Use this gfree firefox 3uide:


Its show how to block on a windows network.
You had better move to 64 bit firefox like me lol.
See .