Am I Being Spied Upon?

My HP laptop is a recent purchase with Vista and Norton 360. Over the last two days, a pop-up appears from a source I am unfamiliar with. Norton doesnt seem to be able to remove it. When I originally opened it said it could not be removed as it was attached to my IP. When checked my IP has a v.long alphanumeric reference preceding it. Is this relevant? How can I remove this pop-up?