Gear Grinding

I have a honda prelude '98 automatic transmission which has sport shifting. I lended my car to a friend of mind which is a rough driver, when i went to jail for about a month. When i came out i drove the car and everytime it goes from the first to the second gear the gears seem to be grinding. I was able to drive the car to and from work everyday. Pounding at first gear and when it automatically shifts to second gear i would let go of the gas so it would shift smoothly and driving to 3rd and 4th isn't a problem. Well i happen to lend the car to my friend once again and he took it too the mall. I guess he pounded it when the gears where grinding and every single one of my gears seem to be grinding and loose even the reverse. Now when i go to drive or reverse the car just sits there. I have to feather the gas to about 3000rpm before the car starts to move. Can someone tell me what i can do to get my car fixed and how much would it cost? Thanks

did you check the tranny fluid level ? try check it and maybe even change it and see if it helps

does it grind when you're not using the sport shift?

yeh the gear grinds regardless even without sportshifting.

new tranny

how much would a trany cost on a honda prelude 98. im very low on cash so yeh.