I think if you go to this page:
https://www.adobe.com/cfusion/entitlement/index.cfm?e=labs%5Fphotoshop%5Fsn,
log in or create one you can get a temp serial number. I used my CS2 one
but if you don't have it will give you a 30 day one.

Cheers,

Wayne


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Wayne J. Cosshall
Publisher, The Digital ImageMaker, http://www.dimagemaker.com/
Blog http://www.digitalimagemakerworld.com/