Changing User Name.

I have a forum member that wishes to change his screen name but doesn't want to lose the number of posts (188) that he has accumulated under his old screen name by starting a whole new account/screen name.  


Is there any way to do this?  


Or does he just have to bite the bullet and start again from scratch? 


Can we help him? 

http://www.monkeystealsthepeaches.com/mongosbrother/blog/