[Spangle]

First thing you have to do is reset all the passwords, that means anyone signing in has to change their password.

Secondly you need to go through the files and see if there are any there that shouldn't be.

The only way to restore things as they were id by running a backup, and to be honest it shouldn't take that long, once you get it from your host, I know it's too late, but you should really be downloading a back at least every other day yourself, not relying on the host.

If it's only the front page that they have hacked, ( I'm assuming it's a portal) alter your .htaccess to forum.php, then at least your members can get into the site.