Try this:
It the Netgear's setup turn off / disable the DHCP server on the Netgear router.
Set the Netgear's IP address to something like 192.168.1.2, different from the Actiontec's IP.
Connect the Ethernet from the Actiontec to a LAN (rather than WAN) port on the Netgear. That way you'll only have one DHCP server and it will be the Actiontec. In essence your Netgear box will be function as a switch and wireless access point, rather than a router.
I have a similar setup here using a D-Link router as a second WAP.