Didn't work. The first time, there was no such registry key, so I added it, put in my homepage and restarted the app. It came up with "http://kmeleon.org"
;. I went back and looked at the registry key and this time it was there, but it's value had changed to the above.
Besides, editing the registry is not an excluse for putting this in the application. A "Make this the start page" setting would be trivial to implement.