NIS 2009 - Can't configure scan performance profile

I would like to configure my scan performance profile, but I'm having problems.  The help text says: 

"To configure Scan Performance Profiles
     In the Norton Internet Security main window, in the computer pane, click Settings
          In the Scan Performance Profiles row . . ."

I don't see any "scan performance profiles row" in the computer settings window.  My other settings are:

Compressed files Scan:  On
Remove Infected compressed:  Off
Limit Data Extraction:  On
Rootkits and Stealth Items Scan:  On
Tracking Cookies Scan:  Remove
MS Office Auto Scan:  Off
Idle time scan:  Weekly
Advanced Heuristic Protection:  Automatic

Low Risks:  Ask
Scan exclusions:  None
Signature exclusions:  None

Can someone help please?  I'm sure I must be overlooking the obvious, but what?

 

 

NIS 2009, 16.5.0.135
Operating system:  MS Windows XP MCE, SP3.
Processor:  AMD 64 Athlon X2

Message Edited by oldern_dirt on 07-16-2009 10:52 AM