(Screenshots are for HTC EVO with Firmware 2.1-update1 but firmware 2.2 is very similar)
Press Menu button, then tap Settings
Tap Wireless & Networks.
Make sure Wi-Fi is turned on.
Tap "MRsecure" and then Connect to network.
NOTE: The next screen may appear depending on what firmware you are running. Select 802.1x EAP or Enterprise (depends on firmware).
Select PEAP and MSCHAPv2.
Enter your MYMRU username in both Identity and Anonymous identity fields.
Enter your MYMRU password.