There are a lot of problems with validating the efficacy of EMDR. Here's a good spot to start looking into this. I'm not a fan of it, but that doesn't mean it doesn't work for some people...
http://www.quackwatch.com/search/web...D=1&query=emdr ...oh, and please don't shoot the messenger; I'm just on guard against people paying a lot for therapy that is largely un-validated.