I've followed your instructions and loaded FBReader and the registry modifications. mrxvt didn't work but I went ahead anyway. Now I'd like to tell FBreader that it is to open .html documents and not Mobipocket. How do I do that?
Also, can I delete the entry notification that FBReader Registry has been installed?
I'm happy with FBReader and I wouldn't have loaded it without your step by step so thanks again.