You have to find the executables that are creating the .BAT files.
How are you scanning with both "McAfee" and "Norton". Please elaborate.
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Dave
http://www.claymania.com/removal-trojan-adware.html
Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp
Take a look at the following:
http://www.threatexpert.com/report.aspx?md5=7112746b97fe64c040f51570fa416aa4
Then try running AntiVir rescue boot disk, which runs from CD/DVD and does
not require your OS to be running during the scan and deletion of malware.
http://www.free-av.com/en/products/12/avira_antivir_rescue_system.html
You will need to be able to burn a CD or DVD in order to create the boot
disk.