Only need the CD for the laptop. Actually, it's usually best to plug the device in, allow Windows to detect it and ask for drivers then click through the folders on the CD to the actual device driver. Otherwise the manufacturer's own wireless connection software will be installed and I've not seen one yet that does the job better than XP's built in wireless connection management software. However, you can always disable the third-party software if you find it doesn't perform properly. I am assuming XP as a Vista laptop is almost certain to be wireless and an older laptop with Win98/ME won't have wireless management software built-in anyway.