phranque - 6:44 am on Oct 26, 2010 (gmt 0)
welcome to WebmasterWorld [webmasterworld.com], lukeharris!
what response do you get for a HTTP request?
did you check your whois and DNS configuration?
have you tried to ping that domain?
as far as your rewrite code, you should escape all the literal periods in the patterns with backslashes.
added: when i tested the response for your "parked" domains they both 302 redirect to your canonical domain.
this doesn't seem possible if you are still using that code.