[H] MSSE?

[DSinc]

Have a fresh new XPpro build. Even though this client is NOT connected 
to my LAN yet, I also installed MSSE.  It was most grumpy w/o net 
connection.  I understand.
It did complete install, but now waits for its' "new" def file(s).
I plan to plug the cable in and go live shortly. I have to finish my MS 
XP updates.  Will the base load of MSSE provide needed protection in 
its' base form?

Or, should I go niggle a new def file from another MSSE test client?
Best,
Duncan