The older adapter (which is cracked from travel but still works) connects like a charm with the Z100 but the new one won't connect to the Net, even tho the router sees it and lists it Active.
Windows sees the network too and lets me get to the point of clicking "Connect" but then tells me it can't connect to the internet. Linksys tech has been no help except to tell me I have the right drivers and my network just isn't allowing the connection. Any ideas would be welcome, (but I've already thought of sending the new adapter back).

Did you check the client limitation on your z100g? Remember that you can go "outside" on only 5 devices.