Adjust older CPAP

I have an older Respironics Solo LX CPAP system.
How do I adjust pressure and elevation,machine is in very good condition.
I have no insurance to buy a new one,my brother has a new machine through his insurance but he does not know how to adjust this unit.

Here is a link for the user's manual:

http://www.respironics.com/UserGuides/U ... SoloLX.pdf

Here is a link on how to change the pressure:

http://www.ehow.com/how_6918737_do-pres ... cpap_.html

Here is another link:

viewtopic/t34396/Adjusting-Air-Pressure ... oPlus.html

Good luck.

Sleepy Carol,
Thank you.
500MPH