I've no idea what cwrsync is, though I suspect it's an offshoot of rsync. If you can do it (install this app or whatever) in your existing perl code pp will simply package that all up for you. If you're looking for your app to have a GUI there are several options, Win32::Gui, Tk and others.

See http://par.perl.org for more about pp and PAR, what it can and can't do etc.