Not sure where to post this but, this is the main sub forum I visit and I am using a Mac Air to access the internet. You'll see why that's relevant below. Comcast called and wanted us to upgrade our modem as we've been using the same unit for at least 6+ years. Took old one in and received new one. Hooked it up and began the process. All worked well. I was able to connect my Time Capsule and everything is good. Then I went to the admin website for my modem which also now included wifi. I changed the user and password. I thought I was very cool because I had named my Time Capsule and my Xfinity modem/wifi . The problem is that when I changed the Xfifnity modem/wifi to it also changed the admin/user name to . All was fine, as it accepted the changes, until I tried to sign back in. Apparently the symbols aren't recognized by the system. Before I call Comcast I was hoping for the expert help here at MacRumors. I was hoping there might be a quid and easy way to login. If I need to, I will restart the whole process if that's possible. Like a hard restart of the modem/wifi router. Just don't want to deal w/ Comcast CS right now. Thanks.