[otrs] Graphs

I discovered the ability to create graphs recently. However, when I attempted to run the script to create the graphs I received the following error . . . Can't locate GD/Graph.pm in @INC (@INC contains: /opt/otrs/Kernel/cpan-lib /opt/otrs /usr/lib/perl5/5.8.0/i586-linux-thread-multi /usr/lib/perl5/5.8.0 /usr/lib/perl5/site_perl/5.8.0/i586-linux-thread-multi /usr/lib/perl5/site_perl/5.8.0 /usr/lib/perl5/site_perl .) at ./mkStats.pl line 37. BEGIN failed--compilation aborted at ./mkStats.pl line 37. Can someone point me in the right direction on how to resolve this problem? TIA, Bakari A. Allen Director of Information Technology Jackson and Hardwick, LLC 770.625.0200 extension 210 bakari.allen@jhlaw.net