Basically to be seen in another sequncer (he recommends Power tracks)

Exit for MIDI instruments is good on yamaha. Just click on the first field and if Yamaha's dll is not there you have to look for it in the folder where the VSTi are in, to me in 2012 are here:

c:\Program Files (x86)\Steinberg\VSTplugins\VST 32\VSTi\YAMAHA
and is loading