Haha, well, feel free to ask if you have questions about Photoshop stuff. I'm not necessarily an expert, but still might be able to help out. That option's usually checked on by default, maybe there was a minor hiccup the last time you tried it. I've never used paint shop pro, but there might be something similar to the photoshop thing on psp as well, or it might be under the general preferences option since pressure sensitivity should be able to be turned on or off.