All Tamper Protections Greyed Out?

I am wondering if anyone has run into this before.  The OS I am using is Windows XP, and the security package is Symantec Corporate Edition version 10.0.0.359.   I am administrator on this computer, and I need to be able to modify the tamper protection settings.  The problem is that the options are all greyed out.  I tried to look at the registry for any obvious settings, but found none.  Well maybe they are there but just not obvious.  Just wondering if anyone has had this issue before and if so, how was it resolved.

 

 

Thanks