Avast found this virus:
http://www2.shrani.si/pics/vrmdkhmgp.jpg
What to do now?
If this is a program you have had for some time, previously not been detected, I would check it isn’t a false positive detection. First Extract it from the chest (right click on the file select Extract) to a temporary folder so that it may be checked.
Check the offending/suspect file at: Jotti - Multi engine on-line virus scanner if any other scanners here detect them it is less likely to be a false positive. You can’t do this with the file in the chest, you will need to move it out.
Or VirusTotal - Multi engine on-line virus scanner
If it is indeed a false positive, add it to the exclusions lists (Standard Shield, Customize, Advanced and Program Settings, Exclusions) and check scan it periodically using the ashQuick scan (right click scan), when it is no longer detected then remove it from the exclusions.
Also see (Mini Sticky) False Positives
I can’t check it by Jotti. They are saying that the file is 0 bytes big. And virus total says there can be uploaded only files under 10 MB. ???I have turned off my firewall and extract the file to the other folder…
Files inside of avast Chest are protected and can ‘get out’ from there. It’s for security. Chest is Quarentine.
Anyway, you can send the file for Alwil for analysis through email. Right click it into Chest.
If it’s a false positive, Alwil will correct the detection. If not, you can leave the file there in Chest for a while (two weeks) and then delete 
ok thank you Tech! 