To score with grounders in Fifa2000, i have to press the reverse direction + up or down and shoot(eg.if ur side is attacking right and u wan to shoot to the keepers left press down-left +shoot). However i do not know how to score by lobbing the keeper. Its not in the manual.(anyone help?) And also in World class mode, i have never scored a free kick directly. Its always wide or the keeper save it. Can i increase the length of the arrow???Or does anybody know how to score free kicks in WC level???

yes you can, I score about 85-90% of my free kicks, aim to the upper corner of the goal, on the far side of the keeper.