I also have ResScan but have also discovered in other forums whist chasing down the links for ResScan, a freely available program called Sleepyhead.
It is still in development. It has been written by an apnoea sufferer and is a bit more flexible the ResScan in that it will read directly from the SD card or from a folder on disk. It also runs on Mac's and UNIX/Linux. I'm using it on both XP and Ubuntu. I think it has the makings of a realy useful product.
Currenly supported machines:
Philips Respironics System One (CPAP, Auto, BiPAP & ASV models)
ResMed S9 models (CPAP, Auto, VPAP)
DeVilbiss Intellipap (Auto)
Contec CMS50 Oximeters
ResMed S9 Oximeter Attachment