If you are wanting to get connected to your work or college's secure wireless network, you may be hard-pressed with the stock Android wifi configuration settings. Even though the underlying operating system (as of Android 1.6) supports enterprise wifi networks, the only way to set these required modifying a configuration text file. The problem is that non-root users on Android have no read/write access to this file (/data/misc/wifi/wpa_supplicant.conf) where the Wifi network configurations are stored.
There is now an installable GUI app for Android called Full Wifi that allows non-root users to connect to Enterprise Wifi networks such as LEAP / PEAP / TKIP / CCMP / MSCHAPv2 etc.The app is free, so go get it! Full Wifi