Help! It won't move!!

from the sound of your post you still need to add more fluid till it gets to the full mark then run thru the gears a few times then recheck the fluid and top it off again,repeat till full on the dipstick with the car idling in neutral with parking brake on and wheels chocked.yea ya should change the fluid and filter and yep you might have to have the input shaft changed on the earlier a body transmissions.hope this works out.