I just received a Westell 2100 Wirespeed Dual Connect DSL modem that I ordered. I also have a D-Link DI-604 Ethernet Broadband Router which I've been using for a while now to network the two PC's that I have. The Westell is up and working (which is how I am connected now). What I want to do is connect the Westell DSL modem to the D-Link DI-604 Ethernet Broadband Router (so that I can share the Internet connection, and still have a network connection between the two PC's also). The problem that I am encountering is whenever I hook up the D-Link, I cannot establish an Internet connection, nor connect to the Westell or D-Link's setup through their IP's, as if connecting the D-Link is causing some sort of blockage in the network. When trying this, I connect a CAT5 cable from the WAN port on the D-Link router to the ethernet port on the Westell DSL modem, and both the PC's are connected to the ports 1 and 2 of the D-Link router. I can ping the Westell and D-Link's IP's but I get no response. If I disconnect the D-Link router I can enter the setup of the Westell modem, if I disconnect the Westell modem and connect the D-Link then I can conncect to the D-Link's setup IP. With both connected I can't do either one. Ideas? Note: I updated the Firmware on the Westell Wirespeed Dual Connect DSL modem and it is now up to date.