Restoring deleted folder/files

Hello,

Hi, I am copying files/folders from other computer to my computer (using 'run' on the start menu, then I connected to the pc's ip address), and I accidentaly deleted a folder from which I am copying.
I searched my recycle bin to restore the folder but the deleted folder isn't there. I had also searched the recycle bin of the source computer from where I am copying but the deleted folder isn't there too.
Please help me find and restore the deleted folder. Where can I find it and how? Where does the folder/files from other computer that is deleted on my computer goes?
Thanks a lot.