group policy

Hello,
A while ago i had some problems with my Group policy object, downloaded a
tool and made a new one,<screenshot: nieuwe standaard>.
But now i want to delete the old ones, they're bugged.
but when i select one of thole, i get a warning: The system can't find the
specified path<in dutch>.
and when i right-click on one of the bugged-ones and then click Delete, it
says that the server can't process it.
I've managed to disable the settings of them, but now how to delete them?
screenshot: http://img141.imageshack.us/img141/4266/naamloosou9.jpg
windows server 2003 <no SP1>