If you want to make a screen shot of your work or tools in PSP, or anywhere else on your computer, press the PRINT SCREEN key on your keyboard...located over on your numbers pad usually and top left of the first row of keys.
Right click on your PSP workspace and Paste as new image. You can then crop your screen shot down to size and use. This is very helpful if you're having a problem and need to share with someone what kind of problem you're having..:)