I havent been on the boards in awhile, just needed to share some good news and hope it may be helpful to someone.
In my lifetime I was never a very "headachy" person, I have had some migraines, I would occasionally get some PMS headaches.
Then my head began hurting practically everyday since March of 2007, in fact this past March (a year later) I pretty much spent the early part of the day in bed everyday unable to function due to my head hurting. I have family members with sinus problems and they would always discuss their sinus issues but I just never really understood the sinuses, where they are etc and never knew if I had problems with them or not. Someone had told me about using a Neti Pot to cleanse the nasal passages, months later I saw a demonstration of how to actually use it on Oprah, a relative gave me one, I started using it and NO MORE HEADACHES!
I couldnt believe that I spent the last year suffering and something as simple as running saline water thru my nasal passages/sinuses actually made the problem go away.
Hoping this might work for someone else.

Congratulations! It's such a relief when you find something that works. Like you , I found a cure in the most unexpected place, so I thought I'd share. After years of blowing off my dentist's suggestion that I get a dental nightguard, I finally bought one. The dentist was concerned that my nocturnal teeth grinding would result in irreversible bone loss. My teeth are in much better shapenow, but the big surprise was that the mouthguard put an end to my migraines. I often woke up with migraines that continued through the day. Wish I discovered the mouthguard much sooner. Isn't it great to be headache free at last?!!