Thanks for the info. The AirPort Expresses are not "showing up" in AirPort Utility because they have not been configured to "join" the new Netgear network.
Temporarily, move one AirPort Express to the same room or close proximity to the Netgear router
Make sure that your Mac is currently connected to the Netgear WiFi network
Power up the Express and let it run for a full minute
Then, hold in the reset button on the Express for 7-8 seconds and release
Allow a full minute for the AirPort Express to restart
The Express has now been reset so that it can be configured again with a new setup
On your Mac......
Click on the WiFi menu at the top of the screen
Look for a listing of New AirPort Base Station
Just under that listing, click on AirPort Express
When you click on AirPort Express, that will start up the AirPort Utility setup "wizard". It will take a few seconds to analyze the network and then suggest the correct setup of the Express to "join" the Netgear wireless network.
The window on your screen will look similar to the example below, except that you will see your Express pictured and the name of the Negear wireless network displayed.
In the screenshot below, you can see that an AirPort Express is being set up to join a WiFi network named 2Wire902
Base Station Name........Type in a device name that you want to call the AirPort Express. For example......Express1
Password.......Type in the WiFi password for the Netgear wireless network
Verify.......Type in the same password again to confirm
Click Next
The "wizard" will set up the AirPort Express to "join" the Netgear wireless network. When the Express "joins" a network it is automatically configured to be a client of that network, so you don't have to worry about Client Mode or anything like that
When you see the message of Setup Complete, click Done......and you are done.
Now relocate the Express to the area where it will be needed and power it up again.
Set up the other Express exactly the same way, except give it a different name.......for example, Express2
IF......you want to use an iPhone or iPad for the setup.......
Go to the iOS device Home Screen
Tap on Settings
Tap on WiFi
Look for the listing of Set Up New AirPort Base Station
Tap on AirPort Express
Follow the prompts similar to the setup with a Mac.
