Definitely read the linked thread, and look through some of the watches that are known to be real. For instance you could look through all the pictures in the private sellers thread. They will be accurately described. And once you've gotten hooked on something, post a thread here with good pictures! People here are very generous in trying to keep you away from fakes or redials.
If you will post more about what you're looking for, we can try to help some. Are you looking for any Omega? Mechanical or quartz? Are you just looking at De Villes?