Great to see this forum. I only am in pursuit at present because I picked up a used Zeo unit and was referred to this form as the only existing place to boot up the data to save it from the bed side unit to PC. I am amazed at the serious nature of this forum and I think I will be enriched by browsing it and until I get the bio feedback that I am embarking on. I have an iphone 3GS and it may have an app to do the sleep monitoring et al, so, anyway.
I do know of a friend that wares a mask for severe SA. 
Welcome, Rob! Let us know if you are able to get your Zeo going.