Question about norton anti-virus - ... how do i stop making it annoying?

[Ahlexus]

I've got Norton Anti-Virus running and every time it scans out-going email, this obnoxious message pops up to let me know it's scanning and what the progress is. I checked the settings to see if I could somehow turn that option off, but I can't see where I can. I've got the "tray icon visible" thing, but I don't see an option to turn off that huge pop up window.

Can someone please tell me how to make this program less annoying?