And it’s not as bad as it sounds.  I suffer from sleep apnea, and I have an CPAP machine which records all sorts of data.  Including Central Sleep Apnea.
Anyhow, onto the web links:

CPAP vendors
SecondWindCPAP (I purchased a Resmed S9 APAP machine, which I’m very happy with)

CPAP Software
SleepyHead – software which allows you to read sleep data from some machines.

CPAP Forums and other resources.
Whirlpool Australia CPAP discussion.
Apnea Board
CPAPTalk