If you find you will need to install many modules, setting up your own
$HOME/.cpan/CPAN/MyConfig.pm might be worthwhile.
You will need to touch entries like the following:
'build_dir' => q[/home/me/.cpan/build],
'cpan_home' => q[/home/me/.cpan],
'keep_source_where' => q[/home/me/.cpan/sources],
'makepl_arg' => q[LIB=/home/me/myperl/lib INSTALLMAN1DIR=/home/me/my
+perl/man/man1 INSTALLMAN3DIR=/home/me/myperl/man/man3],
Once you have done this, you will be able to install modules easily using:
perl -MCPAN -e shell
install Net::NetSend