Centauri27

Yes, that did the trick--thanks for the tip!

From what I've read in the documentation, the Eraser tool is suppose to erase the selected part of the image, make that spot transparent. I have two images on two separate layers and am trying to do just that: erase a bit of the top layer so that the bottom layer shows through. But no matter how I try, the Eraser tool is not working! Selecting the tool and erasing does nothing. Changing the brush size does nothing. Trying different images does nothing--the program is seemingly ignoring the erase. Does anyone have any ideas what's happening? I am running Paint.NET build 3.55.3767.28608 on Windows XP XP3.