I had another Customer Support session with Dlink and we got to the point where the wireless router seems to be working OK by all indications (lights) except that my desktop computer, connected to port #1 (or any port) of the router will not make the connection to the internet. Same thing with the laptop computer, it is also unable to connect to the internet even though it is receiving the signal from the wireless router. I am very disappointed in the D-link's support, first they told me that the problem was my Internet provider, then that my Antivirus program was blocking it. I don't believe that's the case because I have different anti-virus programs for each computer.
Anyway, I am returning the router to Dell and will try something else that is not so hard to set up.
Thanks for yor your help.