Scoll down your thread to the very bottom and you will find "similar posts". There is one who asked the question and received some 28 replies. Read that thread as well as the others. It may give you a lot of information to start.
It would be helpful to know more about the VX you are buying... did you check the VIN number with carfax for any possible accidents it may have gone through? Are you buying it from a member of this site?