[Elecraft] KX3 & MORTTY: How to?

[Eric Rosenberg]

I'd like to use MORTTY with my KX3 (driven by Win4K3 or N1MM), but can't 
figure our how to do it.

It appears that I have to turn the KX3 keyer off, but that doesn't seem 
possible.

I'm using the MORTTY CW sketch and 3-pin connectors (tip=CW; 
ring=PTT;Sleeve=rig ground)

If it isn't possible, is there a way to drive the KX3's internal keyer 
from a keyboard (i.e., laptop).

Any help is appreciated!

73,
Eric W3DQ