the default map for profiles with win7 64bit is:
C:\Program Files (x86)\FreeTrack\Profiles
If it is not there, it is gone.You didn't make a back-up of that profile?
Maybe you can restore your pc to the timeof your old freetrack, make a backup of your profile map. Uninstall freetrack and install it again.Put the back up of your profile map back.
Maybe you are lucky and you get it back.