Wondering About Editing...

I use Irfanview to compress my screenshots, but I was wondering if it could be used to edit them :-?. The best I figured out how to do with a shot was this

All I was able to do was sharpen it and switch a few colors around. I know I basically did nothing to this screenshot but I was wondering if there is more I can do with Paint and Irfanview.
Any comments welcomed
Nick

All I was able to do was sharpen it and switch a few colors around. I know I basically did nothing to this screenshot but I was wondering if there is more I can do with Paint and Irfanview.
Any comments welcomed
Nick