Copy the Grc.dat file from the NAV server, which you want managing the individual clients, to the clients.  This is accomplished by...
1.  Connect to the VPhome share of your Nav Server.
2.  Copy the Grc.dat file.
3.  Win95 clints - Paste Grc.dat to c:program files\nav\
3a.  Restart Win95 client.
3b.  Log on to Win95 client.
3c.  Wait about 5-10 minutes and check your SSC console to verify that the client is in the location it is supposed to be.  You may have to refresh the screen.
4.  WinNT/2k clients - This is a little different.  Paste the Grc.dat file to c:\documents and settings\all users\application data\symantec\norton antivirus corporate edition\7.5\
4a.  Restart WinNT/2k client.
4b.  Log on to WinNT/2k client.
4c.  Wait about 5-10 minutes....  See step 3c.