I have PaintShopPro 7, but I don't know how to make it do much, as I don't find it a very intuitive program. Is that some kind of compression algorithm, where the size stays the same but the data gets sorted or something so there's not so much of it?

I kind of like the larger physical size, because I can barely read some of the icons people have made with clever sayings on them. And some I can't read at all!