Changing a user name in dnn

From http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/36/threadid/27822/scope/posts/Default.aspx

update users set username='newusername' where username='oldusername'

update aspnet_Users set username='newusername' ,loweredusername='newusername' where username='oldusername'

Only I may still have some more work to do - how does integration with YetAnotherForum work?