Sure >>>>
Avast (you already have this)
MalwareBytes Anti-Malware (scan at least once a week)
MCShield (free scanner / AV only for USB drives) -
- Download MCShield to your desktop and install
- It will initially run a scan and show the result as a toaster by the system clock
- Then in the control centre select scanner and tick unhide items on flash drives
https://dl.dropbox.com/u/73555776/mcshield%20unhide.JPG
- Plug in the drive and McShield will start a scan