Verizon versus MacBook.

Setting up a MacBook and a Windows based PC on the same cable modem turned out to be a long drawn out project. Admitting I had basically no experience with modem setup and I do assume many of us are in a similar position.
The modem in my system is a Verizon DSL Westell model #B90-210015-04, very common. I started out trying various set up modes on my new MacBook The message I got was “you are not connected to the Internet”.
The next step was calling the Verizon technically help line. Explaining my situation of wanting to switch cable from my modem between my PC and MacBook as needed. The tech. help person did a line check and cleared the modem. After re-starting the modem and MacBook I was online. Later I switched the cable to my PC and was unable connect to the Internet. Several hours later I tried again without changing any settings the PC connected immediately to the Internet the MacBook did not.
Calling Verizon help again days later we went through the same procedure as the first time and my MacBook worked fine. I did ask the help person why it quit working the first time. The reply was “it was the IP number”.
So, fine some time later I wanted to use my PC online but was unable to connect again.
The situation was getting a bit frustrating.
I did call Verizon help again and talked to a very knowledgeable help supervisor. He explained to me, this particular modem will attach to one device and is unable to serve another without resetting it. His recommendation was to either replace the modem to a different type or use a router. I decided to ad a Linksys model BEFSR41 router with 4 ports. The supplied CD with step by step instructions made the router set up quick and simple. The final message I got was “you are not connected to the Internet”. I expected this to happen though. Calling the Verizon help line again the modem was cleared, and a new IP number assigned to the router. After restarting the modem, router and PC the system worked perfect.
Next my Mac needed to be set up. Any one of the open router ports to complete the Mac/router cable connection can be used. The Mac Network setting is DHCP automatic. As soon as the connection was completed both computers were up and running with improved speed and reliable connection. This type of set up is required any time more than one computer of any type connects to this type of Westell modem.
Technology is great but finding clear accurate instructions on how to set up or use devices in a specific situation is often difficult to find. I don’t believe my situation was so unusual.