Face a point ignoring Y axis

I need to rotate a character to face another point, but ignoring the Y component. Tried this some weeks ago and discarded the code because it didnt worked. How can I rotate nodes to point in a given direction?

One way is to use LookAt() and rewrite the target y coordinate so that it’s the same as the character’s y coordinate. For example in the RagDolls AngelScript example (needs all characters to be stored in the modelNodes array)

for (uint i = 0; i < modelNodes.length; ++i)
    Vector3 target = cameraNode.worldPosition;
    target.y = modelNodes[i].worldPosition.y;

Yes, that should work! Now I remember that what I did was to set target Y to 0, with the side effect of character being rotated to look a bit down.