For adding PPM repositories, perhaps including a batch file which does something like
C:\> ppm repo add trouchelle http://trouchelle.com/perl/ppm/
C:\> ppm repo add bribes http://www.bribes.org/perl/ppm/
C:\> ppm repo add uwinnipeg http://theoryx5.uwinnipeg.ca/ppms/
might help an accident-prone user?
Also along these lines, if you want to provide a package that demands a non-trivial set of prerequisites, one possibility is to make a
bundled zip archive of all the ppm packages, which then can be installed, in principle, from a batch file - see
http://theoryx5.uwinnipeg.ca/ppms/bundles/ for some