This is a picture of my first official (had borrowed a card) setup for wardriving. Not real sure if ill stick with the cantenna, I have to get around to making an omnidirectional antenna (i have an omni that I'm borrowing from a friend as well, but its a cheap pos).
Not pictured is a dell inspiron 8600, some usb extensions, as well as a 10ft N(m) to N (f) cable
I decided to go with the usb client so that i could use it with my desktop if i felt so inclined. Pictured below is the hole i cut so that the pigtail would go through. Another reason I like this more so than the stand-alone card is that this will put WAY less stress upon the mc connector. Using usb to extend the antenna away from the laptop was also a big plus.
The difference between the internal antenna and the pasta cantenna (only like 10ft away from the access point.