Have you got a flywire door in your house? Sometimes it can help to have one person outside the door with the dogs on a leash, and another inside with the kitten and the door between them - they can see and smell each other but not get to each other. Give both lots of praise (and maybe some treats) when they check each other out calmly. Gently reprimand for any aggressive behaviour.

It may take a fair while for them to get to know each other, and you may find that tolerance is the best you can hope for, but it's worth doing.