With mod_perl it is possible to write Apache modules entirely in Perl. In addition, the persistent interpreter embedded in the server avoids the overhead of starting an external interpreter and the penalty of Perl start-up time. As usual O'Reilly has a book Writing Apache Modules with Perl and C (www.modperl.com) that may help.

See also PerlScript for Windows based web server.

after
http://perl.apache.org
http://www.modperl.com