I finally worked out the issues with my laptop. I did a complete reformat/reinstall then I used XPLite from LitePC to "diet" XP down in size. I removed everything I didn't need, and installed the demo for OMB8 along with my Hypersonic 2 XXL and MIDI-Yoke. Then I hooked up both my P-250 and my DGX-305 through USB. Amazingly having both connected at the same time is actually working now, it didn't before. And the sounds are amazing! The GM Library of Hypersonics GM4 module is great, but I've found that most styles from my DGX uses the same channels for Bass, guitar, piano, pad etc. so I have managed to save different band setups (Jazz quintet, rock band, modern pop etc.) with instruments using the entire hypersonic library. And boy does this sound good!
I've posted a short demo so you can hear! This is using my Jazz quintet setting, using the XXL Acoustic bass, Jazz drums, GM Jazz guitar, Jazz organ and a rhodes piano for the solo. this sounds lightyears ahead of my dgx, at least in my opinion

Just pay attention to the sound, not the playing

It was done in just one take with no editing or cheating...
http://espen.stua.biz/fly-me-to-the-moon.mp3 I would love to hear sound samples of other peoples software setups!
Doc-Z