Is it possible to connect a laptop to a desktop, the the desktop to the XBOX?

[Firesign3394]

I just got a new laptop, and want to share files with my desktop.

Since my XBOX is using my ETHERNET port, I thought I could use this USB adapter that adds an Ethernet port. Would that work?

What kind of cable would I use to connect them? Crossover or Regular?

Then could I see files from both computers in Windows Explorer?

Then, could my XBOX see files on the laptop?

It would go like this:

LAPTOP > Desktop > Xbox

[Clumsy]

I think what you want is a network switch.
http://en.wikipedia.org/wiki/Network_switch