Logic Pro 8 Keyboard Sound Bank Through MOTU 128?

Hello everyone, my first time questioner, long time listener.

Just tried re-hooking my studio back up, this time using pro 8. Can't seem to find my TS-12's sounds within logic? I found the MOTU 128 and created a synth and connected the two on midi ports one to and from, but even then, can't find my cheasy keyboard presets within? Any help would be great, couldn't find the answer...so it must not be a problem...except for me. Do i pick external midi or soft synth?:brkwl: