You may want to think about investing in a program like:

http://www.undelete.com
It runs about $30 (USA) for the home user.
http://www.diskeeper.com/diskeeper/h...rnfj3kn4lo5nvd

(I just started using it and I can see how useful it can/will be.)

Binoy wrote:

i made some changes in my M.S Excell file and saved, but after two days i
reallised that i dont want that changes how will get my old file which the
changes not done?

--

Dave Peterson