Data recovery from a hard disk crash

Hi, One of the hard disks on our cluster crashed a few days back. Some of the data on the disk hasn't been backed up. It's about a month's work. I Googled for data recovery software and found some stuff. I am mailing to ask the more experienced guys on the list as to what can be done. Any data recovery software that you guys suggest? It would be very helpful indeed if we can recover the data. Guys here are fleecing us to do the recovery. Regards, Chaitanya. ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs