VIRUS ON GAMES DISC

Hello.  I scanned a game disc and found a trojan.  I did not let the scan complete but cancelled it and took the disc out of the drive.  now, everytime i reboot my machine I get a Norton window open telling me that Norton cannot complete its scan because the disc has been removed.  However, even if I rescan the disc to completion I still get the message everytime i boot up.  Any ideas how to stop this window from opening?

 

I am using Norton AV 2005 on an XP PC.

 

Cheers

 

Colin