in reply to Use a CGI generated picture on a forum?

I've never done it, but all you should have to do is: 
<img src="http://yourdomain.com/your.cgi">

[download]
where your cgi is the one that generates the pic. You'll have to generate the right content type (image/jpeg for instance) and you should be ready to rock.

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come

In Section Seekers of Perl Wisdom