Using Xlink Kai with xbox 360 without router

I have an XBOX 360 JTAG quite some time and I'm tired of playing in Single Player. The router is in my brother's room, and I use my computer and WiFi Router Xbox on my brother's provides.

I tried to connect the Xink kai to NO-IP, and I also tried to connect the Xbox to the computer by LAN cable to provide the Xbox Internet from my computer, but all I failed.

I have no Hub or Switch. The only thing I can use this LAN cable, and I could not share the Internet through this cable.

If someone has a guide that I can use it and can get me that would be great :)

By the way I use Google translation, grammar errors are caused by this :)

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