I'll take a leap here and assume that you have a portable dish that you want to set up on the ground, and that your meter is one of the small (about 2"x3" boxes with an LNB input, Receiver output, a meter, and a sensitivity knob.
1. Insert it inline with one of the LNB cables - doesn't matter which one.
2. Turn on your receiver. Go to the guided setup and enter your current zipcode when prompted. it will then show you the approximate azimuth (compass direction) and elevation for your particular satellite.
3. Aim the dish in the proper direction (use a compass) and approximate elevation.
4. Turn the sensitivity knob up until the speaker squeals and the meter needle is deflected to the right; then back it off a bit until it stops squealing and the meter drops back.
5. Now swing the dish slowly from side to side, staying within about 15 degrees on either side of the original compass direction, until the speaker and meter again begin to show signs of life. If this doesn't happen, raise (or lower) the elevation of the dish slightly and try again.
6. Do this until you've found the signal, then repeat steps 4 and 5 until you get the strongest signal, backing off the sensitivity knob as you go.
That's all there is to it. If you've peaked the signal but the receiver won't load the programming data or show a picture, chances are you're not on the right satellite - recheck your compass heading and elevation. Some people will contend that the antenna mast must be perfectly vertical, but that just isn't the case. Get it close and you'll be just fine.