addTorque and addForce - How to do this?

Hi,

I need to apply a friction force F1(Fx1,Fy1,Fz1) to the point P1(Px1,Py1,Pz1) of a body "me". I don't think I can use addLocalForce, since F1 depends on the body velocity vector and orientation relatively to the world.
I'm doing something like this:
me->addTorque(F1, P1 - CenterOfMass);
me->addForce(F1);
Am I right?

Thanks,
Dirso.

BTW:
1) P1 is in local coordinates (relatively to the body origin)
2) CenterOfMass = me->CenterOfMass + InicialCenterOfMass

If you want to apply a force in the local coordinate space, apply it with "addLocalForce". How exactly if F1 calculated where this will be a problem?

Because it looks like that if the orientation of the body has changed since the game started, the Force is multiplied by the body's orientation;