Airport to Ethernet to PS3?

Hey all,
I am trying to share my wifi connection from my macbook to my PS3. I have enabled sharing and have an ethernet cable hooked up to my PS3, however, I get a DNS error. Now, here are my settings:

IP Address: XXX.XXX.X.N N=number greater than the original digit.
Subnet Mask: 255.255.255.0

Now, I am unsure of what to enter for

Defaut Router:
Primary DNS:
Secondary DNS:

I have something there, but I don't think it is right. How do you find those?

The error I get is:
Obtain IP Address: Succeeded
Internet Connection:Failed

An error occurred during communication with the server. This is a DNS error.
(80710102)

Please help!

Slugzzz

Assuming you have internet sharing enabled on your MacBook,
on the PS3 you would enter the Macbook's IP address as both Router and Primary DNS. You can leave secondary DNS blank.

It works! Thanks!