a free focusing tool?

Stumbled across Astrojan Tools for EOS. Snooped around the web site but couldn't find a list of supported cameras. Downloaded the manual. Nothing there. Applied to join the Yahoo!Group; searching deferred until I'm authenticated. Downloaded the non-ASCOM version and installed it to John Charles. Jacked in the camera to the computer. EOS Utility launched, of course. OK. Good connection. Looked like there was not a formal installer. Just run it... Reviewed the manual for the installation instructions. Confirmed. Just run it from the preferred folder. OK! Gritted my teeth. It was then, on page 2, in the Preface, I caught it—out of the corner of my eye—the text "40D." Huh? What? The author said "I can test usually only with a 40D." Bingo! This should not blow up the Canon camera. Started the AJT app. Hit Connect EOS. Error dialog. Oh oh. Manual suggested a common cause was the camera being powered off. Ah. It had timed out. Powered on the camera. Hit the connect button again. Wow. I was in.