The IP address can be any unused address on your network.
My PC is 192.168.1.128
My WDTV is 192.168.1.129
My server is 192.168.1.130
My PS2 is 192.168.1.131
Mrs. RG’s PC is 192.168.1.64
The only thing is you should never manually assign a number that’s in the DHCP range. My router is set to use 192.168.1.64 to 192.168.1.127 as DHCP numbers, and you see that none of my other devices are in this range other than Mrs. RG’s PC. Techically I shouldn’t have set it to 64 (or should have changed the DHCP range to start at 65), but since I don’t connect devices that need an address assigned to them through DHCP, I’m not going to have a conflict. The DHCP range will be in your router’s settings too (see below).
The proper Subnet and Gateway depend on your router, but the subnet is almost always
On my router, the Gateway is
However, as I said, different routers can use different settings.
For my DNS entry, I’ve always just used my ISP’s DNS settings. I got them from my router’s settings pages, and manually put them in my PC’s setup, instead of using the Automatic setting. Thus, when I got the WDTV, I just copied the primary one from the PC’s settings to the WDTV’s settings.
Usually your router will have a setup “webpage” that you can browse to. Mine is accessed by inputting http://192.168.1.1 in my browser’s address bar. If that works for you, then you know that your gateway is also 192.168.1.1, and you should be able to find some usable DNS settings. If your router has a different address, you’d have to browse to the proper one. Details should be in your router’s instructions.
Or, in the case that no DNS addresses show up anywhere on the router’s setup pages, you could always call your ISP and ask them what DNS address you should be using.