Windows XP - removing the "System at Risk" balloon pop up?

[cmoses]

I am running Windows XP on my MAME machine, it is not hooked up to the network and does not have any anti-virus software on it.  I do not have it booting directly into MALA yet, but plan to in the near future.  When I boot up I get the "System might be at risk" balloon that pops up in the lower right hand corner.  The balloon says that no anti-virus was detected and that the computer is at risk.  This stays up until I click on the close button in the top corner.

Is there an easy way to get this from popping up every time I load up my computer?

Any information would be appreciated.

[HaRuMaN]

go to Start > Settings > Control Panel > Security Center

Click:  Change the way Security Center alerts me

[FrizzleFried]

Disable the service...