Network Security Map Help

I recently downloaded a trial version of the 2009 Norton Anti-Virus software. 

 

In the Network Security Map section, it says:  "Total in Network:  32"

 

The only one that has a name is the first one...which is mine and it is secure.

 

The other 31 say "New" with a question mark box symbol underneath them.  They are all online and are listed as a Generic Device but are not listed as secure.

 

For Example, one of them says - Adapter Manufacturer:  Dell ESG PCBA Test

 

Is this something that needs to be there?  If not, how do I delete the remaining networks?

 

Thanks in advance.

 

BH