djbob,
you asked about what we were using? I was using WordPress 3.0.1 (It's the latest version), and that means I was using php like other hacked sites.
as NikeJoshua said and I saido before too, It seems the attack was on whole Server and not on a site for a specific reason. I didn't tell anybody about my site and as i told u, it was still in maintenance and at the very begining so there were not any special thing on my site to give the hackers a reason to attack!
I deleted my whole files on server, so i can not tell u to check my files, but i don't know if they logged in in my cPanel or not. I wih you could have find out that how they attacked, did they used an exploit on WP or PHP or what?