Disklavier

I have purchased Cakewalk and would like to use it edit and
primary play (jukebox)midi files to my Yamaha DGAIXG Piano.

I am using a Vaio W2000 laptop with a Midiman USB Midisport 1x1 adapter.

I do not how to set this up.

I have installed CakeWalk, I can open midi files and play them
thru the laptop speaker. I have set( I think) the piano (DKC100XG)
to use the external midi in port, connected a cable from the adapter
midi out to the piano midi in. I have tried each one of the output
ports as follows.

Output ports:
Microsoft GS Wavetable SW Synth
Microsoft MIDI Mapper
ESS FM Synthesizer
ESS MPU-401

Shouldn't there be s USB midisport port ?

Any help would be greatly appreciated

thanks

jrt