Connecting to Live! (ICS)- IP Address fa ...

I tried searching the board, and didn't find any helpful solution so here I am posting a thread. I am sharing my internet connection from my computer (Internal modem) with my Xbox 360. I turned on ICS and set Automatic in both IP address and DNS settings in PC and 360. I get ''Limited Connection'' in XP computer and my IP Address test fails in Xbox 360.I used to run Live! without a hitch, until I had to replace my damaged ethernet cables with a new one.