Control Panel is Missing

H E L P !!!! My XP operating system has lost the control panel in standard operating mode. It can only be found in SAFE MODE. In my folder options dialog box the ? Show Control Panel in My Computer ? pick box is selected. When I pick start and then pick the ? set program access and defaults ?I get ?THIS OPERATION HAS BEEN CANCELED DUE TO THE RESTRICTION IN EFFECT ON THIS COMPUTER. PLEASE, CONTACT YOUR SYSTEM ADMINISTRATOR ?.
My system is not part of a network. There is nothing that is networked on my computer so how can there be an ? ADMINISTRATOR ? ?
I tried to find Tweak UI and couldn?t locate it anywhere. I then down-loaded power tools ? Tweak UI ? from Microsoft and looked at the control panel area of the Tweak UI and found that ?access.cpl ? had a checkmark in the pick box. The login repair portion didn?t change anything. I went looking for the access.cpl program in the system32 area and when I double pick it the ? ADMINISTRATOR ?? reference comes up. As a mater of fact when I pick any of the CPL files that same error statement comes up.
I tried the http://www.dougknox.com/xp/fileassoc/xp_cpl_file_assoc.zip trick and nothing changed. I did the ?SFC /SCANNOW ? move with my WINDOWS disk and that changed nothing.
My operating system is ? XP HOME Version 5.1, build 2600 SP2, cpu is an AMD A64 X2 4200+ 2x 512KB cash on a MSI K3N SLI Platinum MB, w/ CORSAIR 2 GB DDR2 Twin 2x Matched Memory Pair RAM, and a e-GeForce 8600 GT video card.
I have reinstalled XP several times using the REPAIR feature and stupid XP doesn?t fix the part of the system that deals w/ GROUP POLICY RESTRICTIONS. Some how there are restrictions assigned on my computer
I am not that aware of how to use the system restore feature that windows has but it doesn?t matter because the ? ADMINISTRATOR ? statement is displayed when I try to access it through the HELP feature of XP.
Got any suggestions ??????

THANKS IN ADVANCE
LEFTY??