My bad. I made it seem harder for you than it is. You can buy salmon steaks already cut. If you buy from a fish-monger, they'll be happy to cut the bones out of the steak and tie it in the way I described. If you're buying from a supermarket that doesn't do much cutting, they might not custom cut the fish for you.
If not, don't let it bother you. Just learn to season and cook the steaks to the stage you like them. If you're not much of fish eater yet, that's probably medium-well. If you're a salmon lover, that's probably medium.
What's the difference? Well, if you cut into a medium done piece of salmon, there will be a very small section in the middle that's still shiny, soft and slightly underdone. Medium-well, and that bit's gone. Well, which is not good means try fish that flakes open very easily. A generation or two ago, Americans were taught to cook fish until it flaked. Don't. Not only will it taste bad, but it will be so dry that it will stick to your teeth. Yucch! No wonder some people don't like fish!
I know I said this before, but it bears repitition: If you cook salmon steaks under the broiler, you'll notice that the skinny legs (belly) cook faster the big, meaty section around the backbone. Those parts can handle being cooked more well done than any other part of the salmon, because there's comparatively more salmon fat around them. Don't worry about the word "fat," when it's in the context of salmon. It's delicious and very healthy, too.
Because of changes wrought by over-fishing, global warming, and the Bush administration's water policies in the west, this year's Pacific salmon run will be very reduced in the species of salmon most preferred. The only wild salmon available at anything like a decent price will be leaner species than most people are used to. This means being very careful not to overcook the salmon.
Lean salmon cooks like lean hamburger. That is, it cooks very fast and goes from rare to overcooked in almost no time. If you use a recipe or a fish-monger's recommendation you'll have to "undercook" by quite a bit. To start, figure a third less time than a recipe specifies. Remember what I told you: Press the salmon with two fingers. When you feel it push back, it's done.
Hope this helps,
BDL