M.I.T = Multimedia IT dept.

For example, the CGI.pm installation:

cd /tmp
tar -zxvf CGI.pm-3.05.tar.gz
cd CGI.pm-3.05
perl Makefile.PL
make
make install

ps: It is reported that Open Webmail will hang in attachment uploading
when used with older version of CGI module. We recommend using CGI
version 2.74 or above for Open WebMail.
To check the version of your CGI module :

perl -MCGI -e 'print $CGI::VERSION'

REFERENCE: Openwebmail installation README
http://openwebmail.org/openwebmail/download/doc/readme.txt