Should I Be Concerned ?

I wasn't even web-surfing or checking email when Nod32 warned me of the following virus. ( doing nothing when activity light flashed but had IE browser opened on Homepage)
I also have Process Guard installed.

Time Module Object Name Threat Action User Information
13/11/2005 9:11:00 AM AMON file C:\ms32.sys Win32/TrojanDownloader.Small.BRP trojan deleted YOUR-8ABC512DA0\Compaq_Owner Event occurred at an attempt to access the file by the application: C:\WINDOWS\Explorer.EXE.

I deleted the file but Nod32 warned me to backup my files before-hand.

 

I would definately be doing a full system scan with all detections turned on.

HTH

 

Yup me too.
I would also scan my pc with one of the online scanners, just to make sure that everything is gone.
It's a habit of mine, done it with all AV's I've had