Wow, yeah. I know what "gimp mask" probably brought up. Not exactly what you wanted to see. o_O

I'm not very skilled with masking or even selecting areas, but it's something to work on. I tried to work with selecting an area, and ended up freezing up the entire program (hopefully, that was just a random thing). Thanks for the link! I'll check it out.

There is a Polygonal Lasso tool in GIMP too (it has most of the same basic features, if not the more advanced ones), and I have used that before, so that might be a good option.

If I just had a couple of tubes of paint front of me, this would be so much easier. :P