IMPORTANT NOTE:  At the current phase of our Early Adopter program, installing the program is slightly more complicated than it will be on final release.  Since the EA version will be changing so rapidly, we are relying on SVN to keep everyone up to date.
 
Once you purchase Ecstasy Early Adopter, download TortoiseSVN, if you don't already have it, from here:
http://tortoisesvn.net/downloads.html

When you have that installed, create a directory in Windows Explorer where you want to put Ecstasy Motion, right click on that directory and find SVN Checkout, and give it the following URL:
http://bag.dreamhosters.com/EM_Client_2011
(Do NOT just click on this URL, that won't help!  Paste it into Tortoise SVN under "SVN Checkout".  It's an open repository, so just leave the User/Password blank.)

When that gets done checking itself out, find EcstasyMotion.exe, run it, and enter your license code.  After that, you're good to go!