Miss Thing, your vibration could be from many things...I read someone told you a bad engine mount which could be the case, but the usual culprit is the rubber doughnut stabilizer that is around the drive shaft. It mounts to the unibody and keeps the vibration down (hmmm). The rubber always blows out and gets rotted. There is also a rubber disk that mounts between your driveshaft and the tranny which can blow out as well(it is called a universal joint). have your mechanic check these out, but don't ever let someone take advantage of you because you are cute! They seem to do that.