Need help with setting up Internet sharing to PS3

Hey, so I am trying to use my Macbook as a wired router to my PS3 (My Macbook is on my wireless Linksys router and I have the cable needed to create a wired connection from my Macbook to my PS3. I had this setup working once before after getting a specific set of numbers from a google search but can't seem to find that page anymore. I've only been able to find threads on creating a wireless connection. So here is my problem. From system prefs, I am entering into my PS3 all the numbers my Macbook is giving me from system prefs (my IP address, default router, subnet mask, and DNS servers). But ever time I run an internet connection test I get DNS Error 80710102. If someone could help me it would be greatly appreciated.