This is a very complicated situation, and it depends on what exactly has been overwritten.
First, try this freeware file recovery utility (but don't make any changes with it): http://www.pcinspector.de/file_recovery/uk/welcome.htm
Next is to try the appropriate version (NTFS or FAT32) of the GetDataBack software: http://www.runtime.org/
This will install a program that will tell you what it can recover (but you'll need to cough up $80 US in order to get it recovered).
Finally, there's the professional data recovery experts with the high-speed machines that can do anything. They can get your data back for you. The problem is that, when I last priced it, the cheapest price that I could find for an 80 gB drive was $600 US - with most prices between $1200 and $1800.
My browser caused a flood of traffic, sio my IP address was banned. Hope to fix it soon. Will get back to posting as soon as Im able. - John
(my website: http://www.carrona.org/
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