Perl, CGI, and graph's (.png's)

I have just installed the Perl module Chart::PNGgraph
to do some graphing (pie charts) in my cgi scripts; works
quite nice. I do, however, have a need to create a bar chart
capable of x,y,z coordinates. Has anyone done this? If so,
is there a Perl module(s) to help me out? I realize this
isn't quite a Linux question, but I thought I could begin
here first.

Mike
mgcon@getnet.com
http://www.getnet.com/~mgcon
Phoenix, AZ
USA