Problem with MS Access

[Ernie]

I Reformatted my computer. When I installed Office 2003,everything opened except Access, so I then installed Office 2007 and everything opened, including Access. I had Office 2003 on originally before the reformatting and all worked?? When I open Songbook and choose what to open, a page comes up and says...Unrecognized database format. I have no idea what to do or where to go from here. Anyone's help would be greatly appreciated.

Thanks,
Ernie