Cool! I always forget to do that myself (well, twice).
Remember that if you get antsy and want to start setting it up, you can always go into the DNS settings for that domain to get the IP address of the server DreamHost assigned it to. You can then create a local entry in the hosts file of your home computer - that way you can start setup of the domain prior to DNS propagating.
You should remember to delete that local entry after DNS has propagated to prevent future confusion!
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