Hi Douglasco, and welcome to the Nikonites Community. A great place to be if you like talking photography and about using your Nikon. Sounds like you are catching the NAS disease (Nikon Acquisition Syndrome). A lot of people around here have it. There is no known cure. But alas we live with it, and of course buy more Nikon equipment. We have a number of D3100 users here. Our motto here is the only dumb question is the one you didn't ask. So feel free to enjoy the site.