If you're going to bake fish, be sure to include some kind of liquid in the pan.
Also be very careful not to over cook it. Even with the liquid, over cooking fish makes it chewy. You want to aim for light and flaky.
Salmon has a fuller flavor, so a soy sauce and lemon juice mix works pretty well. You can rub a mix of black and red pepper on the fish for some more flavor.
Side note: if you're baking it you might want to get some sort of fat free pan spray. That stuff is your best friend in the kitchen... granted you're not going to be cooking 300 slabs of fish like I'm used to doing at work, but any time saved doing dishes is great.
Anyway, set the oven to 325. Spray your pan, pour a small layer of the soy/lemon mix, rub the outside of the fish with the pepper if it's thawed, or sprinkle on top if you're cooking it frozen. It should only take around 15 minutes in the oven, depending on how thick they are. I wouldn't cook them for more then 30 minutes though.