new purchase on laptop and desktop

I have a small office for my hobby and ordered a laptop and desktop. I have DSL and would like a little info on how and what I need to get to run a network to both of these. I will be using the laptop in the main part of my house where the DSL box is located and the desktop in my home office. Do I need a mini card for both to get this work or will one in the one that is hooked to the DSL box be fine? Which kind of Networking hardware do I need to get? New at networking and would love any input you might have. Thanks for any help.