Cisco WAN :: Configuring NAT On Catalyst 2960

I've just made a purchase for a Cisco 2960 8 port switch ( Exact model: WS-C2960PD-8TT-L ), I reckon this is what I need to set up my network, so far I've gone through the Express Set-up and configured it through there with no problems. I've set up the hardware in the following manner:
 
 -Internet Modem
>Port 8 on Switch
->Port 1 on Switch goes to 1252 Cisco AP
->Port 2 on Switch goes to Linksys VOIP home Router
 
I let it start up and can connect to the internet through the AP, and through the router. (I'm posting through the AP-Switch set-up right now.) However, once I connect to the AP with a second client. It refuses to let the second client connect/not give an internet connection, as it would a direct connection to the modem.I'm going to assume this is due to NAT not being configured through the command line on the switch yet.