Group Policies

K, so I’m a newbie at this and all help is appreciated. I’m trying to set policies on a local PC running Windows XP Pro. Basically, I want to restrict access to certain features such as the run command, deleting desktop items, etc. I have implemented the policies, the problem is that even the local administrator account on the PC has lost the priviledges. My question is, how do I assign local policies on the machine for certain groups without affecting other groups such as the Administrator group?