The domain name should be the *last* step in starting your casino.
Yes, there are far more important things to do, such as naming a CEO, coming up with logos, deciding whether your bevy of programmers should use web 2.0 or web 3.0 technology (I suggest 3.0), setting up a forum, ordering up business cards, designing some "under construction" graphics, "hiring" a VP of Marketing (working for equity only, of course), writing up a mission statement, ordering a copy of "PHP Illuminated", etc etc
If I've learned anything from these forums, it's that the first thing I need to do is proclaim myself CEO of my company. I'll worry about setting it up and all the other little details later - I'm an ideas guy.