apt-get install libexpect-perl
apt-get install libwww-perl
-The Red Hat way
+The Red Hat (RPM) way:
perl, perl-DBI, perl-DBD-mysql, perl-DBD-Pg, perl-Expect, perl-libwww-perl
-perl-Gtk2-GladeXML
+perl-Gtk2-GladeXML perl-Gtk2
+
+The following will probably also be needed by rpms (at least on SuSE):
+perl-Cairo, perl-ExtUtils-Depends, perl-ExtUtils-PkgConfig, perl-Glib
The generic Way, if those modules aren't packaged by your distro
perl -MCPAN -e shell