Very good so far.
If you start running the Protein Skimmer now, it might not be collecting anything as there are no real organics built up yet. But this will give the Skimmer time to break in. What kind of skimmer was it again?
Test the water every day, or at least every other day until you see a steady drop in Nitrites and Ammonia. Nitrates will start to show up, hopefully <5ppm. Running the skimmer might help keep the Nitrate level down. Test salinity when you mix the water, then every once in a while to make sure your losing water to evaporation and not a leak.
Next wait for a diatom bloom. It looks like dusty, rust colored algae coating the live rock and sand. After this recedes, coraline algae should start to cover the glass and rocks. This is more purple and almost looks flaky.
After the diatom bloom you will start to see microfauna in the sand, on the rocks and on the glass. This microfauna is copepods, amphipods and small crustaceons of the like. They copepods appear as little white dots that are kind of "jumping" around the glass, and the amphipods look like minature shrimp. When this microfauna has populated your tank, you are then ready for ONE fish.
Let us know step-by-step and we'll help guide you through the proccess. Also if you have a camera, post pics in the Saltwater Pictures and Videos
section, so we can see what is going on first hand.