User Profile Problems

When I installed WinXP Home It used my name for some of the personalized folders, but in “\Documents and Settings\” there is no directory with my user name, just the other user folders, a shared folder, and for the folder
that should have my name,it is named “Unknown User”. I have tried to rename this folder, but windows says it is a system folder and can’t be renamed. Is there a way to fix the name on this directory (folder) globaly? Registry change
or something, maybe? Thanks!