How to Remove Printer from Registery

Edit: If you just want to remove the default printer you can:

    Login as a local admin
    Start -> Run -> regedit
    Click HKEY_USERS
    File, Load Hive, browse to 
    C:\Documents and Settings\Default User\ and select NTUSER.DAT
    Specify "DU" if prompted for a name
    Browse to HKEY_USERS\DU\Software\Microsoft\Windows NT\CurrentVersion\Windows
    Look for a key named "Device" of type REG_SZ
    Double-click that key, remove the data, press Ok
    Browse back to HKEY_USERS\DU, click the File menu, Unload Hive