recommended usb wireless network adapter for the xM?

given my current networking infrastructure, i would like to get
wireless running on my xM ASAP. my local geek shop in waterloo has
the following results for a search:

http://www.canadacomputers.com/advanced_search_result.php?keywords=wireless+usb+network+adapter&sid=j377ab6l5rj8b2ut4081k842d0&x=0&y=0

i'm open to recommendations. don't mind spending a bit more for a
better adapter if it's worth the $$$. and i'm guessing the
instructions for setting up wireless are out there and it's fairly
straightforward.

rday