You can check which version of perl is installed with

perl -v
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The ISP I use has both versions installed. Perl4 is in '/usr/bin', and Perl5 is in '/usr/local/bin'. Both are simply named 'perl', so the -v option is the only way to distinguish them.

You might try the following command to hunt for any versions of perl that are installed (results not garanteed)

find /usr -name perl -print
[download]

Hope this helps.

--Chris

e-mail jcwren