If the program prints out a version number, you are in luck. Otherwise, if you get a "Can't locate GD.pm" error, you'll have to install the module. For users of ActiveState Perl this is very easy. Just start up the PPM program and issue the command "install GD". For users of other versions of Perl, you should go to www.cpan.org, download a recent version of the GD module, unpack it, and follow the installation directions. You may also need to upgrade to a recent version of the libgd C library.