154469 Joomla Repair Urgent!!

Within the last 2-3 hours two of my sites have shut down. Please see PlacerGuide.com. The other site is being redirected until the problem is solved. I do not know what the problem is. I have not made any changes to the software or server options. It is possible that one of my programmers did, but I cannot reach him. I have a backup of the database, however it is over 2 weeks old and I'd prefer not to use if possible. The site has not been hacked (I think), the configuration file is unaltered. It is important that whomever takes this project speak English very well, and be able to communicate via msn or skype as we work. The site must be working as soon as possible, within the hour would be preferable.