It should email you a link to get the beta.
But you can also go and download the latest Stardock Central (www.sdcentral.net) and it should show up there in the games area assuming that you used your same email addesss when you ordered as you do for your account here (otherwise you'll just need to wait for the email send to you with the serial info.
You may want to join your two accounts. To do that go to www.wincustomize.com and Click on My Account. Here's a link that talks about cross-referencing your accounts.
https://www.wincustomize.com/crossref.aspx
There are many great features available to you once you register, including:
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