Kevs, just looking in on this thread, it seems to me that you have gotten advice from your hosting service based on their false assumption that ALL computers are vulnerable to the large volume of Windows virus vectors in the wild. You'll see similar blanket recommendations from the banking industry as well.
Your website, if hosted on a Windows (or Linux) server, has vulnerabilities that your personal computer does not have (so far)....and your hosting service is responsible for managing THEIR exposure to that threat on THEIR server while serving YOUR website to the world.
