Intro: How to Steam Lobster
Steamed lobster is a better way to go than boiling. It uses less water so it comes to a boil quicker and the cooking times are the same. Since they aren't drowned in boiling water they don't pick up extra water that will leak out all over your plate and dilute your side dishes with briney water.
First, get some lobster. Then park them in the fridge or freezer for a bit so they chill out and go to sleep.
If you decide you want to boil, then check out this instructable.
Step 1: The Steamer
If you're renting a cottage in Maine it will likely have some kind of lobster pot. It probably won't have a steamer basket though. A lot of folks will tell you just to put an inch of water in the pot and throw them in, but to me that's still boiling. So what you need is help! Find someone willing to go outside and collect you enough stones to line the bottom of your lobster pot.
Pick your stones, wash your stones, carefully line the pot with them, fill with water to just a 1/2 inch below the tallest stones, and fire it up on the stovetop.
Step 2: Steam Bath
Toss in the buggers, cover them with the lid, and give time them just as you would if you were boiling them. For 1 1/4 - 1 1/2 pounders it'll be about 15 minutes.