Try this,
I created a script which delete autorun.ini and autorum.inf files from your pen drive, when u removing it from an infected computer. If ur machine is infected, copy the file to all your partitions and run once.
Here you can find how to remove the autorun virus and a method to unhide files which made hidden by the virus.
http://mntdrcore.blogspot.com/
And don't always try to depend on virus guards.. you can do this b'coz u get the stuff for free in Sri Lanka. Still some popular AV's are failing to clean it.
Just like United State can't defeat terrorism... AV's can't fight against hackers and crackers.
So let's use the Sri Lankan way of dealing with terrorists.