I am thinking about buying a dlink DSL-2640B modem/router/wireless all in one. I normally wouldn't buy an all in one but don't have enough space on my desk for a bunch of boxes. I would like to setup so that wireless users can access my dsl internet but cannot access the wired network. This device has two options ap isolation and guest ssid. I looked at the manual but it isn't clear as to whether ap isolation isolates only the wireless users or both the wireless and wired users. The guest ssid also is unclear. Anybody have tried this on this box or anything similar.