Howszit Saint Lulu? And welcome to GtoG..
To setup your systems what you will need to do is go to the Network Connection control panel on your WiFi system, right mouse click on your Wireless conn, then left click on properties. Once the property window is up, click on the "Advanced" tab. Here you will see a choice for ICS, internet connection sharing. Enable it and it will ask you what connection you want to share it with, (in this case it will be your Local network conn). You will be advised that the Local conn is being configured to a ip address of 192.168.0.1, (that's ok). Your other system needs to be looking for its address automatically, (network connection on the other system) and it should now connect properly to your WiFi system, (because now its accepting other systems to connect to it and providing the path to the internet.
You may find that the connection does not stay stable if you're using a normal UTEP cable. You may need a direct patch cable, (that's a UTEP cable with slightly different wiring...
Hope this helps..