i'm planning on buying an ibook g4 within the next couple of weeks while i'm visiting my girlfriend in new hampshire (no sales tax there ). anyways, i'm switching from a pc laptop and i've been using a linksys WPC55AG wireless card. it supports 802.11 a, b, and g. i never use 'a' so support for that doesn't matter. i would like to get 'b' working at least though. it's using the atheros chipset in it. i've done a little searching around to see if it'd work, but haven't really come up with any real answers. this is a $100 card so i'd rather not spend $90 on an airport extreme card. any insight?