and why u change that?
all the setting are store inside ur user home folder.
if you want to rename it, pls use System Preferences > Accounts

to locate ur desktop's file (if OS X didnt re-built your folder) it's under HD > Users > "your account name" > Desktop

Do a repair permission and see if it fix the problem. if not you have to do a more painful rebuilting process.

This post has been edited by wei: Jun 5 2006, 11:29 AM

well to let you know what happen is actually the OS X rebuilt a fresh "User" folder after you rename it. Because OS X couldn't find the original folder (eh... where is it?).

So, my advice is to do your backup for the User folder. If you do not have the habits of putting files direct into your Harddrive. All your files that store in Documents, Movies, Musics, Pictures, Desktop. As well as your personal bookmarks, playlist, photo reel will all store in your User folder.