How can i recover my replaced file?

Hello,


My memory card was fulled & i have to transfered all photo albums to my laptop before i deleted and cleared the camera memory card.

The album in memory card then started a new photo album with the same date name(Let say is 2010-04). I accidentally transfer this new photo album file (2010-04) to my laptop without notice that this folder have replaced all my photos in old album file (2010-04).

Now my memory card don't hve the old album (2010-04) but both my laptop & camera memory card have only photo album with new photo. The album was replace by new photos in memory card which u am not able to recover the file.

How can i recover/retrieve the photos in old album?
I have try recovering software like "PC inspector file recovering" but this software only can recover those lost file, not the file that accidentally been replace.

Urgent!!