#1
simply configure a second router to work. Cause my Modem is in my Sis' room with the router and I have a 360 in my room I'll want both my pc and 360 to have a connection. How do I do this? I have a couple routers to use.
I got some good guitars, yo.
#2
Turn off the option that tells the router to assign IPs. I forget what its called, its been a long while.

Connect the 2nd router to the 1st router, allow it to be given an IP or better yet set it to 192.168.x.50 or whatever you want it to be. Set your XBox to 192.168.x.51 and your computer to 192.168.x.52. It should work as a bridge.
Why are we so wicked indecisive
Let's hit the streets with toy explosives
And let's enjoy what we have