Found the solution: Rotator(M - P)
(So easy...

</UPDATE>
I want to spawn some class'U' at location P(x1/y1/z1), give them the mesh of a ScriptedPawn and want to rotate them in that way that they are looking to a certain point M(x0/y0/z0). So the normal vector V should be V = M - P. How can I translate that vector into the rotation?