BoltBait, thank you for your words. It reminds me of just what a privilege it is to have a free programme like Paint.net and all the people who have so kindly contributed to make it such a wealthy work.
Rick Brewster, as for images from Paint Shop Pro 5.01, I can't find any for the Spray brush. The others are simply png's that work similarly to ABR brushes.
ReMake, thank you for pointing Rick to the link for PSP 5.01!
TrevorOutlaw, I am deeply grateful to you for letting me know about Dynamic Draw! I'm going to download it now and check everything out. Really excited!!