tc$18441.scn
Weird.. I don't know that file type.. maybe false alarm ?
did Spbot clean it ?
if not, scan file with Onlinescanners from Trend, RAV, KAV (pause avast'S shield for this..)
if it's false alarm, please send it in to avast
if not, boot to safeMode, and just delete the file..
And do all Windowsupdates, secure your IE etc..
further details/links via board search..
P.S.: did you use other (Online-)virusscanners ? or a firewall/scriptBlocker or other monitoring software ?
could be a temp-file from a scanner unpacking a file to scan