You might need to look for where ARSperl is being installed. I downloaded ARSperl and unpacked it into a directory. The support-h.template file went into the root of that directory tree. The file 'infra\exsi.pl' was in the directory 'C:\apps\APSperl-1.85\infra'. In that same directory is the file 'h2ps', with no extension - this is likely the missing file you were looking for.

It sounds to me like you've either gotten a scrambled .tgz file (or it didn't unpack properly), or else you've missed some instructions. For example, did you edit the Makefile.PL file, as instructed? There were three places to make changes, where you needed to add directories to your API, the libraries, and defines.