What brand of laminate are you buying? There are many different kinds and some have a pad already built in on the underside of each plank, which saves a lot of extra work (Pergo Lifestyle, for example). I installed this brand in my living room and it was a piece of cake and I am no carpenter. I agree with those that recommend laying down a vapor barrier on top of your vinyl in your kitchen. Not necessary to use a vapor barrier in your dining room area, in my opinion.
And to second what GorgeCaster said - get a door jam saw to make the appropriate cuts along the bottom of your jams where the new floor will tuck up under. Saves a lot of work and you don't have to remove the jam trim.
Lastly, follow the directions that come with your new flooring to a "T". I wasted a lot of time on the installation doing it the way my brother recommended (and he's the carpenter?).
Lastly, now that you've committed yourself to new flooring, let's talk about trim and molding
- I'll hop in there too once you start the new thread :lurk: