Virus called Malware

Avast found a virus called Malware in my machine. What is it and what can I do?

sounds like avast has detected a new virus. scan online to get a second opinion http://housecall.trendmicro.com

Trend Micro found the same worm in one file on my computer said worm Bad tr c/windows/system/hks dill.dill said it couldn’t clean it and so I deleted it. Then I signed up for Avast and the first time I ran the scan it said one infected file Malware.Worm_Bad trans A. Put it is the chest waiting for grandson to help me out. I am having trouble figuring this worm thing out and how to run a virus cleaner on just one file. ???

http://securityresponse.symantec.com/avcenter/venc/data/w32.badtrans.b@mm.html
http://www.pchell.com/virus/badtrans.shtml