cd '/home/username/.wine/drive_c/Program Files'
there you should see installed apps
then cd to folder of the app and list contents with 'ls'
you should see a .exe file, then just run
and you can create a shortcut on desktop or menu (in kde at least) by making an icon that executes a command like
wine '/home/username/.wine/drive_c/Program Files/myapp/myfile.exe'