no one can login

I am having a huge problem where nobody can login to the boards.

When you try and login, it only goes to the password recovery form. I cannot login through the admin cp either.

I checked the member list, and although names show up, if you try to go to another page of the memberlist, it just takes you back to page 1.

I haven't done any new hacks recently, or even been in the admin cp at all so I have no idea what could have caused the problem. Can anyone help?

My board is hacked, so I assume this is the correct place, but if I need to go to vbulletin.com, just let me know.

Thanks you guys!

[Admin]

Ask your host to turn "register_globals" back on in the PHP configuration.

[Sadie Frost]

Thanks Firefly! You rock!