The install is really the easy part. Your first go-around trying to find the dang birds is what will have you cursing. Put the kids away and if your wife doesn't like hearing four letter words, tell her to go shopping!
The sat signal finder is a must as far as I'm concerned. Otherwise you've got to make sure you're perfectly level, and have the exact azimuth and elevation numbers, not to mention the tilt, or skew, or whatever they call it. I found that with the sat finder, I was able to get everything (azimuth, elevation, etc) as close as I could, then start moving the dish around until the signal pegged the meter.
I got mine at Radio Shack: