This blog is really easy to write, because Suzanne Clothier has already nailed it. Here’s her step by step training article on how to introduce dogs to each other: Dog-Dog Interactions.
And while you’re on Suzanne’s blog, look around a bit. You’ll find a great variety of topics, well written articles and cool games that you can play with your dog.
She’s a clever one, that Suzanne. Sensible too. Hard to beat that combination.