VRT1.tmp file infected

My PC seems to run OK but each time I turn it on, Avast find a Win32:Trojan-Gen that infected the file C:\Windows\Temp\VRT1.tmp.
Avast suggest me to move to chest.

I do it but each time I reset the PC, Avast show the message again.

This occur ONLY if I connect the modem!!

I tried Spybot, SuperAntispyware, DrWebCureIt, Ccleaner (all in Safe Mode) but no one resolve the problem.

What can I do??

Hi zor17,

Try to run this tool in safe mode: http://www.free-av.de/en/tools/12/avira_antivir_rescue_system.html

polonus

Here is a link to a quick tutorial on the tool Pol suggested

http://forum.avira.com/wbb/index.php?page=Thread&postID=730130#post730130