Hello,
I thought I would let members know of a nice piece of free software.
You need to use a spare computer to install sophos utm since it uses its own linux based operating system and erases all data on the hard drive. http://www.sophos.com/en-us/products...e-edition.aspx
this piece of software is used to filter out crap before it hits your computers. it has firewall,antivirus etc.
I had to tweak the defaults since the web protection blocks all executable files until you remove them from the list.
it has both avira and sophos antivirus engine for web filtering. the home license also allows you to install sophos endpoint antivirus on to 10machines for free.
I have only tryed it in a virtual machine so far.