Unless they used a program to write over all the data - delete just marks the filename as deleted in the directory. To be able to recover the data - DO NOT write anything to the drives. Use an undelete program or a data recovery service like Geek Squad at Best buy - looks like the cost is $200 to $1400. Best Buy Geek Squad Data Recovery page here [^]

Take a look at www.Simplecomtools.com - TCP Test Tool. Has worked well for me. Freeware - Simple Com Tools[^]