There is a gui for aircrack

http://talk.maemo.org/showthread.php?t=69009

and I think you may want the bleeding edge wifi drivers and power kernel.
http://talk.maemo.org/showthread.php...ding+edge+wifi

after you get them, you may want to install the Wifi driver slector applet. makes switching easier.

http://talk.maemo.org/showthread.php?t=73682

should be all you really need. crackin. the easy way.