It should work like the following. It is more pseudo code, I didn't test anything, it is just to give you an idea:

vec_diff(temp, me, you);//this is needed, but not the vec_to_angle
vec_lerp(temp, ...); //if you want the speed relating the distance to the target
vec_normalize(temp, ...);// if you want a steady speed, in this case you will have to combine it with vec_diff to avoid that it runs beyond the target and back, again and again.
c_move(NULLVECTOR, temp, ... );//the first vector is movement relating the entities orientation, the second uses the world's orientation, look into the manual to clarify this.