Looking to replace my current router and would like to know... 1) Will I notice a real difference between 54 Mbps and 105 Mbps? I have a cable modem, downloading around 6 Mbps. Not heavy gaming, some live video streaming. 2) I'm replacing a D-Link most likely with a Linksys router. Must I or should I replace the D-Link made wire PCI card as well. Thanks for your input. I've learned a lot reading your forums over the past week.