Lotus Smart Suite

Hello,
I had lotus Smart Suite installed on my win2000 pro, I backed up the .APR files but unfortunately i didnt backup the .mdf files and now i have formatted the harddrive which contained Lotus Smart Suite and i am desperate to recover the .mdf files. If i try to open the .arp extension files then it says the it cannot find the backend database and do i want to associate a new one.
That database is very important for me, can anyone please tell me how does one recover the .dbf files from a formatted harddrive?? Or is it possible to recover the database in any way??
I did try using the datarecovery tool, Ontrack Easy Recovery, but it couldnt recover the file.

PLease help.

Regards.