I feel really dumb asking this question but I'm not tech savvy at all. I just bought a D-Link DIR-615 N300 wireless router to use for printing between my laptop and HP4500 wireless printer. During setup using Verizon Mobile USB 760 modem for internet connection---it's not working--Any suggestions? Or is the only way to utilize is to have a DSL or Cable modem? Thanks in advance for any help or tips.