How to share internet connection using AP?

"I would disable the DHCP on the router, and enable DHCP on the Linksys. Set all your clients to DHCP (not static) and have them connect to the wireless network.

That way, the Linksys will give an IP address, rather than the modem, and you can get around their silly 1 address limit. Unless the manufacturer has artificially limited the number of connections to 1, and in that case you should demand a refund and purchase a better modem.

In most LAN networks, it doesn't normally matter which device assigns the IP address to clients, so long that it does assign the correct IP, subnet mask and gateway.

There'll be a section to configure the DHCP of the Linksys, and just simply change the default gateway to the IP address of your modem - in this case, 10.24.24.1."