I rooted and flashed yesterday after I got the evo.
I'm still not sure how exactly I got it, I just remember I was freaking out when it seemed like the phone was frozen.
I some how I got done using the link (rooted)
http://forum.ppcgeeks.com/htc-evo-4g...roms-wipe.html
After I got rooted, I just flashed via ROM MANAGER from market place.