I have a DSL Westell modem (about 3 years old) and a Linksys wireless router. I recently installed a wireless printer/copier/scanner/fax. Since then, I can't get DSL to connect. I can still get on the internet, but it only connects through a "gateway", even though DSL is selected as my default connection. Any suggestions on how to fix this without reinstalling Verizon DSL?