Yes, mod_perl only works with Apache. The original question
didn't state anything about IIS so I assumed apache (I should
have mentioned that assumption in my original post).
I think
its a safe bet that most perl users are using
Apache instead of other web servers.
Of course, depending on how the script is called
the user can set up his script on a separate,
dedicated "hit counting" box running Apache (easy to
repuppose an old PC as a linux box for this purpose in many
environments) he would be set. Or maybe use the
first of those new sun boxes they're getting to build
a new hit-counter box. Good way to test the new hardware
and you don't have to migrate the whole system to sun to get it to work.