Sadly that didn't work.
Heres how I have it set up so far:
I'm using a D-Link DIR-166 Wireless Router
I have the ethernet cable plugged into the WC4150 which is plugged into one of the ports on the DIR-166
The router sees the printer but won't connect.
I tried entering all the IP into the WC4150 from the guide you linked with the info listed on the DIR-166 WAN setup screen.
The WAN on the DIR-166 is set up as a DCHP Client as well. So maybe thats the reason? If so shouldn't it just pick up the connection with the WC4150? I'm a little lost but determined!
What Im looking to do is add the WC4150 to my home network so I can use it to print and scan documents.