grinding noise???

if there is a bearing going bad, you will be able to hear the tone of the grinding change as you jerk the steering wheel left to right (while moving) and it will make the sound wether or not you're accelerating if it is more of a clicking sound, it's likely to be a CV joint if you think it's in the trans, and you have never changed the tranny fluid since you've owned the car, i suggest changing the fluid yourself (it takes 45 mins tops) however, my experience is that transmissions only make grinds when you're shifting gears, not when it's already in a gear and accelerating good luck