Just expanding on that link
If you are just trying to get rid of the logon window:
Start -> Run -> control userpasswords2
Once in the User Accounts window
Tick the square "users must enter..."
Single click (highlight) your user name
Click Apply
Untick the square "users must enter..."
Click Apply
Enter your password (if you don't have one, leave blank)
Click OK
OK
Restart your computer to confirm automatic logon