Network setup difficulty

I just want to change the name of my network. (the one that appears in the WiFi list) How can I do this please?
I have a Macbook AIr OsX85, Netgear modem and a Time Capsule.

Is the wireless signal for that network provided by the Netgear device or the Time Capsule? If it is the Netgear device what model is it?

Thank you Slydude. I don't know how to determine which is sending the wireless signal, it's a bit confusing.
My Netgear is marked 'CE 0681' and it says 'Netgear Super Wireless ADSL Router DG834GT' on the associated blue and white instructions page.

what is the ip address that is given to you from that wireless device (in System preferences > network)

It says: "Wi-Fi is connected to 'Paul's Wi-Fi Network' and has the IP address 192.168.0.6". I presume that means the address of the network is 192.168.0.6.

Type in 192.168.0.1 into your browser address bar and tell us what you see

That's the router address. It is titled "Netgear Super Wireless ADSL Router DG834GT" and is a page full of data, together with instructions. But not how to change the name of the network!

Actually, that's your router internal menu access. You can gain access by typing in your username and password. Check your router manual to find out how to log in to its menu. Once in the menu look for network name or "SSID".

I don't suppose the nice Netgear setup instructions are still in the shipping box are they??
Otherwise head off to:
NETGEAR Support | Answer | Accessing the settings of a NETGEAR home router

and if more info needed:
NETGEAR Support | DG834GT | DSL Modem Routers