I don't know any difference between series 1 and 2. But I don't think you'll save any money with the wifi card, because, at least for me, it was free. However, if you want to buy an intel card, you can check them out on bizrate or nextag to find the cheapest ones. A cheap one should run you about $32 shipped. I also think that the laptop only has one minipci slot, so bluetooth cannot be put in internally. I already had a PCMCIA bluetooth card from my old laptop which I'm going to use.