Installing bluetooth Card

Hi, I just got my Dell Inspiron 600m back from servicing from Dell, and they forgot to put my bluetooth card back in. I talked to them on the phone, and they told me they will send a card out for me to install. I've been looking for documentation on how to do this, but I can't find any, so if someone could direct me to a website or explain, I'd greatly appreciate it! Thanks

(ps. I thought that the bluetooth card is a mini pci card, so i popped open the cover to access this card, but there was already a card in there (i think its the wifi card))