http://eregimens.com/therapies/MiscTherapies/Inclined%20bed%20therapy.html
(This shows what the bed looks like using concrete blocks and wood, thus cheaper and probably even MORE stable than the plastic risers I purchased-it also explains the things that inclined bed therapy will help - it's just NOT the same as using a pillow! You would have to get a full-body WEDGE-shaped mattress to do this, and that would be the most expensive way to go!)