Currently everything I have is running 802.11b and WEP. The new PC can do G and WPA. If I were to get a G router: * Can it simultaneously talk G to the new computer and B to the old computers? * Ditto for WPA and WEP? Basically, if I get a G router, do I need to switch all my wireless devices to G, or can I use a mix of B and G, and upgrade them slowly? I believe WPA is better than WEP. What are the advantages of G over B? I think the cable modem speed will be lower than either, right. I don't do much transfers within the house. Though if I set up a PC as a music server or something then it might make a difference.