Have been doing a little more experimenting with VirtMus. I used Free Image Editor to easily erase a note, a note stem and to add a different note with stem and create 2 eighth notes connected together with a bar.

Then rather than use the sketch tool to write in some new chord changes, I found and downloaded Foto Tagger, another free program that allows you to type in text, in this case some chord symbols.
http://www.download.com/FotoTagger/3000-12511_4-10658231.html?tag=lst-0-6

This works pretty slick. I'm trying to figure out what more would one need/want.

Scott