I am planning a small business network, here is what I have setup so far: there are currently 4 workstations and possibly another one will be installed. I have decided on a xeon server with 2gb memory, windows server 2003 small business adition - as I will be installing exchange server as well. I am getting a checkpoint hardware firewall for security. Now I have come to the antivirus and I was wondering if anyone has a recomendation for the type of antivirus software I should install, and does it need to be installed on the server as well as the workstations??