Windows 7 - Changing shared internet connection

I have a working shared internet connection using the Ethernet Card, but I want to change the connection to the wireless connection.
I can share and unshare the internet connection, but nowhere does it allow me to change the home networking connection to the wireless connection.
The home network connection is shaded and doesn't have any change options.

help,
frustrated to the point of anxiety...

We need a bunch more info. Share? with how many computers? what is the network setup? do you have a modem or router? etc



Ken

One laptop running Windows 7 Pro linked to the internet via an express card sim card cellular. I was sharing this connection via Local Area Connection (ethernet cable) to a laptop running Windows XP Pro.

I wish to change the connection to the wireless adapter but the Internet Sharing Connection settings dialog does not ask for the connection (like it did the first time) not does the Properties box allow fo a change.