Network connections screen in Vista query

[Faustus]

Can anyone explain the Network screen in Vista? I have a BT HomeHub connected to the Desktop which is also accessed wirelessly by a Laptop I own as well. In the Network screen is the following, an icon which to me looks like a fridge and says BT Homehub - if I look in properties it is listed as Network device with MAC address etc. Next I have an icon which looks like a router laid on it's side and when I look in properties for that it is listed as Network device - Internet Connection (this connection allows you to connect to the Internet through another computer or shared connection). Next I have an icon which looks like a router stood up and a musical crotchet and cine film attached to it. Finally I have two computer monitor icons - one is my computer by name and the second says THOMSON which in categories is listed as computer - workgroup BT. Is this as it should be or have I got to many devices listed there just for what I am running? Any assistance appreciated