You're going to need:

• libnet
• MIME::Base64
• URI
• HTML::Parser
• HTML::Tagset
• and, of course, libwww.

I'd also recommmend:

• Date::Manip, Set::Object, Storable, IO::Socket, Getopt::Long, Tie::IxHash, Safe, DB_File, Time::HiRes, Digest::MD5, MD5, Digest::SHA1 <
• DBI if using databases (remember to get a DBD:: back-end too, like DBD::mysql or DBD::Oracle)
• If you're into OO, get Tangram and prepare for DB enlightenment.
• If you're doing Event-based programming, get POE.
li>If you're doing CGI work, CGI, FCGI (check out http://www.fastcgi.com), Email::Valid, and various Apache modules.

AFAIK there is no easy answer for this. If I were you, I'd wrap up each CPAN module into a seperate System V package (see the man page for pkgmk, prototype, pkginfo, etc). In fact, put perl into one too (or download the precompiled one from sunfreeware.com).