Yeah you need to be rooted. Turn off the internet so the ads can't be displayed.
If you do root the Evo there are some cool things people are doing with them now, like permanent 3D backgrounds, 3D in Apps that aren't 3D, using the dual cameras to measure distances accurately. I even checked ebay for a Evo 3D so I can try out all the 3D'ness - alas there were none other than BNIB's