This is the most common problem for right handed golfers. Unfortunately it's usually not an easy fix. The problem is either caused from the club face being open at impact, or the swing path coming across the ball from the outside to inside. Both of these create a clock-wise spin on the ball that makes it slice to the right.

Does the ball start off straight and then go to the right or does it start off right and go farther right. Or finally start off left and then move right?

-Dan