(Malware) files in T.I.F. = IE-Browser-Cache can mostly be deleted safely, except if you want to send them in for analzing to avast.

when i checked system with HOUSECALL (Their free online scan) nothing was found!!

did you maybe tell avast resident shield to delete/move/quarantine the file?
Then of course TrendScan can’t find anything afterwards

because about 2 weeks ago i had the same problem with 2 other viruses and got into lots of trouble for DOING something.. and NOT JUST IGNORING IT??

It’s generally advisable to first get information about a virus on the system before deleting/moving it.
'Cause indeed sometimes there have to be made some system modifications/repairs
(manually or with special AV-Tools; see e.g. Avast-Cleaner: http://www.avast.com/i_idt_171.html)
before repairing/deleting malware files; especially if the virus is already active and not just slumbering on the system, like in T.I.F./Temp/Download-folders :wink: