So, I have an Asus eee that I want networked (through a wire) to my desktop so that I can reliably access such features like a 1 terabyte hard drive and a dvdrom. I almost have it working, my set up, as best as I can tell is like this:

I have a wireless network ADAPTER on the desktop which connects to a router.
I have a wifi card in the laptop which connects to the router.
I have a cable (not sure of name ) that connects the ethernet ports of the desktop to the netbook.

Now on the netbook I see two networks: LAN and Wireless internet connection.

On the Desktop I see three: Lan, 1394 connection (underneath it SAYS 1394 net adapter) and Wireless Network connection 4 (underneath it say Lynksys Dual band Network adapter). Lynksys is the one that I know I am using to access the internet. The LAN is connected between the desktop and netbook as when I unplug the cable I get the "cable unplugged" message on both pcs. All networks show as connected.

Right now I can share files...through the wireless connection. If I go into the settings of the wireless networks and turn off file sharing, but leave on file sharing on the LAN network I can no longer share these same files/drives.

How can I make it so that I am sharing these files through the LAN network and not the wireless network?

BTW the error I get when I try to open the files after disabling file sharing on the wireless network is that the file path was not found.

Additionally, I am trying to access shared files through "My Network Places"

Thank you for any assistance, I really feel like I'm in a bit over my head with this.
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I have a wireless network adapter on the desktop which connects to a router.
I have a wifi card in the laptop which connects to the router.
I have a cable (not sure of name SHOCKED ) that connects the ethernet ports of the desktop to the netbook.

I also only want the files shared between the two specific computers, ...

... not every computer that connects to the network.