You access the pressure changes through the machine itself, not via software. You can download the clinician manual here on this forum.
HOWEVER, you've only been at this for two days. LEAVE IT ALONE. Unless you are doing this on your own and do not have a sleep doc, LEAVE IT ALONE.
Don't mess with anything. You need at least ten days of data before you know if it is working or not. You need to see a trend, not a single night just by itself. No two nights are the same anyway. You collect data, see what is your normal ranges, and then you decide if it needs "fixing". If you have a sleep doc, go to him/her, not on your own.
If you got your machine via an insurance company, you especially do not want to mess with anything. Most of them want to ensure you are using the machine so they want the "compliance hours", meaning the hours you used it. Usually it is a minimum of 4hrs a night. If you do not use it within their guidelines, then they can take the machine away.
If you paid for the machine out of pocket, then you don't have to worry about compliance information.
How to get the clinician manual:
http://www.apneaboard.com/forums/Thread-...P-Pressure
Software to help you view the data (using the card and your computer):
http://www.apneaboard.com/forums/Thread-...e-software
