McAfee offer a nice solution - yourasp, which is quite good. Offers a really nice web interface for central reporting and policy configuration etc. At first I thought it would be total crap but now recommend it to our clients, some 6 - 30 PCs. Not sure about the licensing though. But just use what you know, no point spending 20hours trying to figure out some xyz app when you could be doing better things (read beer).