Netgear WGR614 Wireless Router Connection Problem

I recently purchased a Sony Vaio 2.68 GHz system and a Netgear WGR614
Wireless Router to connect to my existing SBC Yahoo DSL Alcatel Speed
Touch Home Router. I plan to connect another older computer to the
router so the 2 computers can share use of the internet. The Sony
Vaio shows a network connection to a Local Area Network (enablesd)
through a Realtek RTL8139/810X and a 1394 Connection (enabled) through
a 1394 Net Adapter. The router light shows power, connection to the
computer (#4 connection), and the internet light is lit (indicating a
link has been established to the modem according to the Netgear
installation guide). I was able to type in 192.168.0.1 in the address
field of IE and connect to the router. The smart wizard could not
detect the internet connection and I was not able to connect after
manually entering configuration settings for my ISP. I have contacted
Technical support with both Netgear and SBC on 2 different occasions
each without coming up with a solution. Netgear first had me return
the router but I had not better luck with the replacement. They then
told me that the router must not be compatible with the modem and that
I needed to have my ISP replace the modem. The ISP was even less
helpful in only stating their obligation was to connect the computer
to the modem and nothing more (I initially had set up a broadband
connection directly to the modem and determined I could connect
directly without going through the router. SBC did tell me there was
no known compatibility issues between the router and the modem. I
would appreciate it if someone could take me step by step through the
correct network configuration. If it is felt that it is not a network
configuration problem, any other suggestions would be most
appreciated. Thanks in advance for your time and assistance.

Paul Tremblay