My documents and settings

hello,
today when i started windows, a new desktop appeared, with new settings and also a new folder has been created in C:\Documents and settings\ called admin.ADMIN, my old folder stills with admin.ADMIN, on the Documents and settings directory, actually, admin is my username and ADMIN is the computer name, when i close the session i have only one user, admin, i tried to change all what looks like admin.ADMIN on the registry to admin but it didn't work !
some people told me to copy the content of the old directory into the new one, i don't wanna do this, i wanna tell windows here are my settings xD !

help me please,
thank's !

feel free to ask for more explanation !

 

well, i wanna have the same old name ! but the mistake i have done is copying the forbidden files "Ntuser "
• Ntuser.dat
• Ntuser.dat.log
• Ntuser.ini

actually, i'm on a Linux distribution,

Thank's a lot for your answer, i'll try !

 

I recovered my settings and application data but the visual style is not working anymore ! thank's

 

rebooting ....

and it worked ! thank's again !