For small offices like yours please take a look at McAfee SaaS Endpoint Protection. Once you create your free trial, you can install protection on your computers for up to 30 days before purchasing a license. This software is offered in 1, 2, and 3 year pricing to meet most businesses needs.
Thanks dsabulsky. I will give it a try. I've heard on a forum that this software breaks a lot. But we have an account and have used it successfully on our pc's. Although right now we are not using it. Can't beat the price of MSE. We've been cutting back because of the economy being so slow here, but things have picked up.