Thank you for your responses. I would need to explain some things whcih were not clear:

Person doing IT in office was a friend who has moved away 1 year ago. For 9 months I was trying to work on this problem, not realizing that there was no internet gateway to the network. The computer that was connected to the cable modem/router was connecting to the network through wifi because the NIC card was being used by the cable modem/router. I called a local company and they suggested to add a NIC card to the computer attached to the router and using this additional card to connect to the network. After doing this the original NIC card which is connected to the internet through the router will be configured to be the internet gateway to the network.
They will be coming in on saturday to do this.

I called them after trying the suggestions above and finally realizing that I could not complste a lot of it because my network was using static IP addresses. I guess this will be fixed by them on saturday.

Thanks again for the time spent in reading this and I hope it makes sense. If interested I can tell you later what the company did on saturday to solve the problem.

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Raj
From (mostly) sunny Port St Lucie, florida