Hi
I'm interested in why you don't
already find that entering a word - Ford, say, doesn't automatically get you to www.ford.com, since it does here, w/o any hacks or modifications to Safari or OS X beyond using google's public dns service.
I find that Safari asks the dns server for the address of
ford + whatever is in the 'search domain' box of System Preferences-Network-Advanced-DNS but if that returns no result, Safari/OS X asks for ford.com anyway, and heads there.
Perhaps it's a dns or search domain issue - try using google dns 8.8.8.8 and removing any entry in search domain.
http://code.google.com/speed/public-dns/docs/using.html
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using opendns -
https://store.opendns.com/setup/operatingsystem/apple-osx-leopard
will achieve similar results, but by having opendns provide their idea of your likely intended destination. Probably none of those are identical to Chrome's control-enter though 🙂