First and foremost, you don't have to take my word for it, but giving a realistic asking price will help your advertising sell your vehicle. Check out another article of mine for an idea of what your vehicle is worth in the 2008 market. You might be suprised at what your vehicle is really worth. Not only that but you'll know whether to up your original asking price or lower it.
This step is where you pick a place to put your ad. I will always suggest using free advertisment before you pay out of pocket to try and sell it. By all means you're trying to make money, aren't you?