I'm still having trouble. I entered my numbers and clicked, this time on "Residential VIP". I put 999999 as the Technicians Number and clicked swap.
It then told me I may have to restart my computer. and unplug my modem for a few minutes. (I don't remember exactly what it said.) I covered all this, but still when I click my browser it brings me to the Mediacom Service Activation Page. Am I missing something?