Airport....Mac...Zaurus

Just received a Zaurus 5500...and am already in love with it. Compared to my recently demised Handspring Visor, it's an Indy racer. Have played with everything, and now I want it to do some real work, but I'm totally lost. So, am just going to tell ya'll what I have and how it's set up and ask for a Zaurus to Airport wireless connection for Dummies version of what I should do (and yes, I've read through the posts on this and am just getting more and more lost )

I have the original Airport, software version 1.3.1 set up as a wireless modem for a Powerbook Pismo running OS 9.04.
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Under the Airport tab in the admin utility I have the following:

Network Name: xxoxo
create a closed network: not checked
channel:11
Station density: Low
Multicast rate: 2
Enable Interference robustness:checked
enable encryption (using wep): not checked
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Under the Internet settings tab:

Connect using: Modem(V.90)
and the usual DNS and dialup information

plus...IP address supplied by server
Subnet mask: supplied by server
Router address: supplied by server
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Under Network settings:

Distribute IP addresses - checked
Airport client computers: Share a single IP Address (Using DHCP and NAT) - checked
Ethernet client computers also share a single IP address (Using NAT): Not checked

Share a range of IP numbers: not checked
DHCP Lease time: 60 min

Enable DHCP server on ethernet: not checked
Enable Airport to ethernet bridging: not checked

No port mapping
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Under the Access control Tab -
nothing entered

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Zaurus Details:

Embedix Plus PDA Version 1 Incorporating:
Operabrowser 5.0
Insignia Jeode JVM
Qtopia for Embedix Plus PDA version1.5.0
Linux Kernel verion 2.4.6.....

Rom Version 2.3.8

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Soooo....where do I start? It's been nearly 5 years since I installed the airport.....and I don't remember a thing about setting that up, except knowing it took multiple back and forths between
my isp's to get it to work...in other words, I know nothing about setting up networks and nothing about wireless access.

Anyone willing to tackle this un? *l* with the child's first reader version of how tos?