Did you reformat Windows 7 or reinstalled?
Formatting a drive (Win7 is an operating system) cause the lost of all files. When format a drive you need to create a backup of the files in an external drive (USB, floppy disk, CD). www.ehow.com/how_5830103_reformat-windows-computer.html
If you reinstalled, (I never done this before with Win7 but) I know that when installing, Win7 creates a Windows.old folder (or something like that). Try to find an "old" folder in C:\Users, and then search for the .rainlendar2 folder inside.
Where were those documents which has been restored? In the same drive?