Making Enemy Follow Player

How can I make an enemy body always face the players position?

you could use enemyNode->lookAt(playerNode->getPosition());

I argee/ But remember to do this:
OgreNewt::BasicJoints::UpVector* uv1 = new OgreNewt::BasicJoints::UpVector(mWorld,npcBody,Vector3::UNIT_Y);
OgreNewt::BasicJoints::UpVector* uv2 = new OgreNewt::BasicJoints::UpVector(mWorld,npcBody,Vector3::UNIT_Z);
OgreNewt::BasicJoints::UpVector* uv3 = new OgreNewt::BasicJoints::UpVector(mWorld,npcBody,Vector3::UNIT_X);
Body of our npc mustn't rotate! Only SceneNode!