You should've posted this in Q&A or General. This is the dev forum. (Just saying it before hand everyone else does)
But there are root methods. Since he just picked one up, it probably has 2.3 Gingerbread on there.
You will have to follow the Downgrade to froyo method. Then root using the GUI Tool. That's the only method for gingerbread.
well if it is the new Evo Design 4g aka Kingdom that was release oct 23rd then it is a locked down phone with a signed bootloader. You will need to get into contact with these gentlemen http://revolutionary.io/ as they will be your only chance of getting true root
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