Hey All,
I was looking for a software AP for my laptop so I could connect my X50v to the internet while I was away from home and using dialup. Anyway I found this really nice software called:
Control AP:
http://controlap.com
Anyway they have versions for every platform, including PocketPC. Apparently you can use your PDA as an Access Point if you connect through you mobile phone.
I have not tried it yet but I thought you might be interested.
Enjoy,