I recommend you purchase a Nebulizer off Ebay, then inhale through your nose, and pulling it up deeply into your sinuses.

I used to suffer severe recurrent sinus issues. /*No longer*/. I got better and I fired my doctor, and started to do things myself! Some things I feel that benefited me greatly other than the above.

http://cgi.ebay.com/Large-Stainless-Steel-Neti-Pot-w-DVD-and-Salt-Packets_W0QQitemZ110491051835QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item19b9c7a73b
Neti Pots are AMAZING! Salt is best, but you can do salt and add 1 drop of Eucalyptus Essential Oil to clear sinus issues FAST.

http://wolfcreekranch1.tripod.com/terminator_zapper.html
This placed over your sinus areas cures then quite rapidly. I have had so much good luck with this device, I purchased a second one! You can find them on Ebay and elsewhere as well. (No financial interest in recommending it)

http://www.mysticmarvels.com/ionprojector1.html
Negative ions. Most ionizers on the market do absolutely nothing, and I have expensive instruments that proved this. Very difficult to get a sinus infect in a strong negative ion field. This guys stuff works. (no, I have no financial interest in recommending it)

Finally, Traditional Chinese Remedies are extremely effective for Sinus issues.. These are cures, not symptom relievers

Good for more chronic conditions:http://www.heavenearthchineseherbs.com/clear-mountain-air-teapill-ding-chuan-wan-p-115.html

Good for acute onset: http://www.heavenearthchineseherbs.com/clear-wind-heat-teapills-sang-ju-yin-wan-p-87.html