Yes sir, i un-rooted successfully, the other thread is floating around some where. I might come up with a step by step if need be.
And after you hack the phone, install something called "clockwork mod rom mannager" from the market.
download and save the EVOlution v8 in the root of your sd card from the XDA forums. Its the best (IMO) 2.2 rom out there for now.
In clockwork rom, press the button that says reboot into recovery.
go to the nandroid option. Back up your phone.
Then go into the flash zip from sd card option. you may have to reboot and repeat the reboot into recovery process. Select that v8 zip, and let it do its magic.
Easy huh?