OK, so I'm getting a new laptop, brand new off E-bay, it is an HP that comes with the AMD Athlon 1800+, 1.53 GHz. Would it be reasonable to assume that I could replace it with another AMD chip? Say, an XP mobile 1900+? When the Laptop comes in, i would like to set up a wireless network. I am trying to find a wireless switch with 4 ports built-in. I will be going with 802.11b simply because i don't want to pay for 802.11g and want more range than the 802.11a offers. I consider myself "decent" at home networking. As in, I can set one up. Wireless Networking is still a mystery to me. I really don't know anything about DNS, WEP, MAC, or NAT. What all do i need to know about these? All help is greatly appreciated.