Yes Troys's mod works great! That is what I have in my iBook as of this morning. My card arrived in the post just yesterday. The cost of the original airport cards on ebay is insane!
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Macbook 2.1 core duo 1gig 160gb sata
iMac g5 w/1 gig 160gig all-in-one and SWEET!
iBook G4 IGhz
Quicksilver Dual 800's
iPod touch
"Guys, I think we just lost the platform here" Pete Conrad
When in doubt, try SCE to AUX