Yep, PSP 11 it is. I'm still finding my way around it myself!
With that pic I coloured in everything I didn't want, leaving the eyes, nose and tongue, then used the magic wand tool on the coloured in bit, chose invert from the Selection menu and then copy from the Edit menu. Then I went to the black & white version of the pic and chose Paste as New Image, then used the move tool to place it in the right position. Easy!