This system is a Dell computer that had a bad dial up modem. We replaced it with a Supermax 561. We have no problem dialing and connecting but once we get on the Internet we can not navigate to other pages. The home page is set at Outdoors Unlimited - the ISP. I can navigate their site just fine but once I navigate away from there I get the "Page cannot be displayed" message. I can access my email without any problem. I use Internet Explorer for web access. Please advise.