You should be able to recover all your files.
If you want to be extra careful then it would be best if you could connect this drive to another computer as a secondary drive. I say this becasue if you install anything to it you will be overwriting hard disk space and there is a small possibility that you could overwrite something important.
Download Recover My Files from
www.recovermyfiles or use this link
http://download.getdata.com/RecoverMyFiles-Setup.exe
Run a "Complete Format Recover" search of the drive letter and search ONLY for the default selected file types. At the end of the search Recover My Files will rebuild your old file structure. Look in "Folder View" for your My Documents folder. Click on the files found to preview their content in the Recover My Files preview window. If you like what you see then you can purchase an activation key and save the files to another drive.
I hope this helps.