Change Computer Name On Vista

Hi,
I recently had my laptop restored by sony
and I can’t seem to change the name of the administrator (Sony) in
‘Computer\C\Users\Sony’
I have renamed everything on the computer to my name.
How do I rename the ‘Sony’?
Thanks
Answer #1
Click Start and click Control Panel.
Click System and Maintenance, Administrative Tools and then the Local Security Policy.
Within the console, expand Local Policies.
Click Security Options. The various security options are displayed in the details pane.
Double click Accounts: Rename Administrator Account.
Type in the new account name and Click OK.
Answer #2
Click Start and click Control Panel.
Click System and Maintenance, Administrative Tools and then the Local Security Policy.
Within the console, expand Local Policies.
Click Security Options. The various security options are displayed in the details pane.
Double click Accounts: Rename Administrator Account.
Type in the new account name and Click OK.
Confirmed. Here’s a link that gives the instructions:
http://www.lockergnome.com/windows/2007/03/07/rename-the-administrator-account-in-vista/
Let us know if it doesn’t work, and what you get instead of what it should be doing.