Hello,
I've switched the layout on my gf's computer to Colemak. That was easy.
I've installed KTouch. Nice program, works well.
I put the files from the Colemak archive into the KTouch folder with all the layouts (which was a different folder than the one shown on the wiki). I could open the Colemak keyboard for editing, and the Colemak "lecture" showed up in the menu.
But the Colemak layout was not shown on the layout menu, and there was no way for me to activate it. :( I tried all sorts of tricks but can't get it to work.
Help?