In the default Vista configuration, Vista makes use of the recycle bin to delete files. So before a file is physically removed from a disk, it is first moved to the recycle bin. That allows the user to restore the file if required.
To restore a file from the recycle bin in Vista, simply double-click the Recycle Bin icon on the Desktop, or right-click the recycle bin icon and in the popup menu select Open.
This will bring up an explorer window that shows the contents of the recycle bin.
To restore a file, right-click the file, and in the popup menu select Restore.
The file will be restored to the original location from where it was initially deleted.