I just tried the jump rope download and it seemed to work fine for me.  I don't know what went wrong when you tried it.  Maybe it'll work when you try again.

The site below is old and I haven't edited it in about a million years, but the EasyPose posing turorials are still current if you want to have a look at those:
http://www.geocities.com/ajaxsoyyo/

As svdl and Gareee said, you wouldn't want to buy EasyPose Underground unless you are making figures yourself.

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