In reply to Thelongcon:
Speak to the guys at Mountain Torx and they'll advise. I've got them to quote me for a couple of days private guided climbing plus a trip up Mount Kinabalu and the via ferrata and it was reasonably priced.
If you want to go and camp and climb on your own then you'll need to apply for an expedition permit from the national park which is probably more hassle than just taking a guide with you (unless your planning a long visit).
Mike
