[jmatta]

I agree with Rob on the steps, but would like to recommend one between 2 and 3. If the paint (clear coat) has been abused, you must use an orbital to polish out the swirls and minor scratches.

My tool of choice is the Porter-Cable 7424 with an orange pad. Using a fine polish (I emphasize fine), it is very easy to buff out the surface scratches with very little likelyhood of damage to the paint. Using a slower speed (around 2500 to 300 rpm) you just work the polish, bringing the clear coat back to a shine. You can then seal the paint at that point, if you wish.

If you look at any of the detailing websites, there are great tutorial videos showing how to use the P-C and it doesn't take a rocket scientist. For an investment of around $130, it will last a lifetime and I highly recommend it.

Here's a pic of my black car to show the results...