The WPA password for my employer's wireless network contains a backtick (`), which is currently not supported by any of my iPhone/iPod Touch keyboards (I'm using the latest firmware at the time of this writing, which is v2.1.1). This prevented me from synchronizing information over-the-air while at work.
The iPhone Configuration Utility, available on Apple's iPhone enterprise support page, lets you create wireless network configurations and send them to your iPhone or iPod Touch. However, it only contains a field for entering the SSID, not the network password. Thankfully, Apple's Enterprise Deployment Guide (740KB PDF) references a Password key that we can take advantage of to send the right password to your iPhone or iPod Touch.
This hint will require your iPod or iPhone to have some kind of wireless network access to begin with. But it also requires a Mac or PC, so perhaps you can set it up to share a wired internet connection over the air (more on that here).
Here's the way to resolve this:
<key>Password</key>
<string>THE_WPA_PASSWORD</string>
Note: I had to replace two characters in the password with XML entities (< for <, and & for &) to make this work.Mac OS X Hints
http://hints.macworld.com/article.php?story=20081105145459612