Dynamic Graphics With ASP

I've posted a thread a few days ago about a ASP.NET script that creates dynamic images.
Somebody mentioned that there is nothing similar to the System.Drawing class in the classic ASP.

Does anybody know which class could I use to create dynamic charts, like pie, or bar charts in old ASP, not ASP.NET? If yes, where can it be found? (Please no commercial components )

I dont need sophisticated charts, I need a class that allows me to dynamically create jpg or gif files, with methods similar to the System.Drawing namespace like createRectange, fillRectangle, drawLine etc.