Here's a detailed description of how to make a pretty good landing, doesn't have to be perfect, as others have pointed out. The aircraft I'm using as an example is the 737-400 default aircraft on FS2000. And an approach to Kansas City International (MCI) runway 19L.
Approaching Kansas City from the Southeast, you should fly until the aircraft marker on the GPS is in line with OJC (Johnson County Executive), by now you should be about 24,000 feet in the air, or less, and descending at a rate of about 1,800-2,000 feet per minute (fpm). Turn north so that you are pointed towards the green ILS approach paths marked on the GPS, slow to about 250 knots, and keep your flaps pulled in. If you're going very fast, open the speedbrakes (spoilers) for a moment or two, to get the airspeed slowing a little quicker. Now that you're pointed towards the MCI ILS runway 19L path, continue descending so that you are approximately 2,000-1,800 feet in the air at the outer edge of the path. About 20 miles out have flaps 15, and at 2,000 feet call the gear down. Set your spoilers to the "arm" position, and set your auto-brakes to "1". Slow to 140 knots at the outer marker, and regulate engine power to maintain this airspeed as you set the flaps to full. Slow your descent a bit, at the middle marker beacon you should be about 350 feet in the air, at the inner marker you should be about 125. At the inner marker pull the power back to just above idle, just enough to keep the plane in the air. And begin to flare, power up or down as needed, so the plane doesn't begin a climb, and doesn't begin to sink to quickly. At about 30-40 feet above the runway idle your engines and hold the flare, as soon as the main gear touches down begin to apply reverse thrust. You should be moving about 135 knots at touchdown. Reverse your engines until you've slowed to 60 knots, then idle them to prevent any foreign object ingestion. Disarm the auto brakes and the spoilers, and slow to 30 knots before turning onto the taxiway towards the terminal. Close your flaps and taxi to the gate.
Hope I helped!
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