QuoteBoy you sure are having a lot of trouble finding a working program, LOL.No kidding!--Seems like I'm spending days just to find a program that I may only use once for 20 seconds just to see whether my lightpen works or not!

Thanks for the info on .G64s. Interesting--the main program file within the .D64 image of Koala Painter is only around 75K, and there are only a few other files--all between 5 and 10K. Yet the .G64 image I downloaded is somewhere around (if not exactly) 326K. I wonder if there's anything extra packed into this image (perhaps a cracked copy protection) that will help me get it up and running. I'll see if Star Commander can read that .G64 when I get home today. If not, I'll try to find some converter program. And if it all fails then I'll probably just give up at this point--and go straight to programming it (or attempting to anyway).
As to the .NIB files--yes, they are 336K--I was looking at the opened .zip file in WinRAR while I typed my last post. I wasn't sure if I had run across this extension for Commodore--each old computer system has so many associated image formats--I've delved into so many old computers in such rapid succession that I often forget which ones are which! But I do remember that .NIB is an extension used in certain Apple II archives--maybe the link for Flexidraw is actually an Apple II version.