Who cares whether Apple or AT&T might shut down your account or slam you with an exorbitant data bill - cre.ations.net figured out how to tether your iPhone to get web access with... well, EDGE. It may not be Wi-Fi or even EVDO, but EDGE should be able to save the day in a pinch, but none of us make any guarantees as to how long AT&T will permit this or what this hack could do to your bill. Proceed at your own risk.
That said, the cre.ations.net hack isn't exactly for the faint of heart either. You'll have to run some utilities, tinker with the command line and stand on your head to get this all set up properly, but once it is, the trick apparently works pretty well. Also, it appears the author wrote this so users across Mac OS X, Windows XP and Vista can play along, so you can take liberties with that work notebook and get hacking.
Of course, I would chalk this feature up as yet another that would be great if Apple made far easier by building into the iPhone's software. Many, if not most, smartphones (and even regular phones) can be used for tethered web access, and a software update down the road would make a lot of mobile users happy.
Thanks Will and Kender