I did some this week actually! I boiled the potatoes, mashed them, then let them cool down for a bit. Chopped the salmon into little chunks and added some dill (not very much, because it's very strong) alternatively you could use parsley. Added salt and pepper and mixed it all in with the mash. Formed into patties, egged them and rolled them in bread crumbs.
The most important bit, imho, is to chill them for as long as you can. They firm up then, and won't fall apart in the pan.