I am about to place an order for an ELK/CADDX wireless system. If I forgo the Ethernet interface to keep the initial cost down, I assume I will connect my PC (which does have a 9-pin Com port) directly to the ELK. How is the programming software in this case? I assume you create the configuration on the PC and then upload it to the ELK. Am I making a mistake not to go with the Ethernet interface? I use CQC to control my ZWave switches and I want CQC to see the ELK. I probably will put off getting the ELK ZWave interface until the dust settles.