I use this little bit at the start of my scripts, as I run them on my local box with $HOME/tools/perl, and on the HP servers as /opt/perl5/bin/perl.

#!/bin/sh 
PATH=$HOME/perl/bin:$HOME/tools:/opt/perl5/bin:/usr/local/bin:$PATH
export PATH
exec perl -S -w -x $0 ${1+"$@"}

#!  perl -w
#line 8
[download]

I got this one straight from perlrun. The same should work for you, but just change the $PATH to include the preferred perl version first.