I'm so not qualified to give golf lessons :) but what helped me virtually eliminate my slice with my woods was to bump my hips forward just an inch or so. It was something on the golf fix, michael breed calls it 'reverse K'. I'm sure you could find video of it on golfchannel.com. It was like magic for me, I used to push/slice it and now I consistently hit it dead straight, that is of course when I am aligned right :)

Where are you hitting the ball? How flat or steep is your swing? Does it seem as though your arms wrap around your body quickly in your follow through? Is your ball too far forward?

I stand square to the target with the ball about 1 to 2 inches inside my lead heel. Start the backswing by rotating your upperbody, but keep your lowerbody as quiet as possible. Stack your weight over your back leg through the backswing and then shift your weight forward, but keep your head back (don't sway, just transfer weight). Focus on hitting the inside part of the ball as if you wanted to push it a bit, but extend your arms through impact and give it a full release. The momentum from the club should bring you around to your finish position.

I would suggest seeing your local PGA Pro for a lesson.