"SERVICE" program in use can't add to firewall

The firewall activities list shows a message that "an instance of SERVICE" is preparing to access the internet"

 

I've located a file called SERVICE in c:\windows\system32\config and tried to add it to the firewall but

it says it can't

do it because the program is in use?????

Why it even cares I don't know but I can't get it to add it.

 

How can I prevent this internet attempt and get the program in the firewall?

 

NIS2008

Vista Home Premium SP1

 

Thanks

Tony