the Modem is built in standard.
You have to choose your wi-fi (minipci card built into bottom of notebook) option.
If you don't use DSL or Cable now then you won't use it right away but trust me once you try DSL or cable highspeed internet you will never go back.
I just switched to DSL when moving to a new house in January (26.95 a month through SBC lifetime if you order other services like Cingular Wireless, home phone service and long distance, etc) and it is outstanding (cable is faster but usually costs $35 or more a month).
Anyway, choose the Intel 2200b/g wi-fi (leave blue light button turned off to save battery life when not using wi-fi). The bluetooth option is only $19 more and a good buy if you think you may use it at some point in the future as it costs up to $100 or more to upgrade it internally in the notebook later (and some people are willing to pay you to sell yours for more than the $19 price upgrade if you want to take it out and sell it -- see www.x1000forums.com
I have a Compaq X1360US and it has run great on the Intel 2200b/g card (I don't have bluetooth as it was a prebuilt) with a D-link wi-fi router on the 2nd floor.
Make sure if you order custom that you order before 9/1/04 to get the custom order $100 rebate ...
see best ordering specifications and tricks to save money (order 256mb memory only -- add your own later for much less in 2nd slot, faster hard drive rpm, etc) at www.x1000forums.com (dedicated to the 3 sister machines).
I'm considering a new Compaq X1000 or HP zt3000 notebook but when customizing them I was given several choices under networking: 1) Built-in 56k modem + 10/100 LAN, 2) Intel (R) Pro Wireless 2200 801.11 b/g, 3) Wireless 2200 801.11 b/g and Blue Tooth. Must I choose between a built in modem and wireless capabilities? I'm using a dial up connection at present and need a modem. Sure appreciate some assistance in this matter.