I went throught the full program about 15 yrs ago, 10 sessions i guess, like mark said. It's really just a deep massage type of thing. The ten sessions cover the whole body.
I felt ripped off, because at the beginning, i told him i had 2 specific problems to work on/fix. He couldn't fix them. All the other sessions were useless, really. Later on, when i started doing stretches before gym work outs, i found that they were as effective as the rolfing. During the last few yrs, i have found out a couple of exercises to control the problems the rolfer couldn't fix.
My recommendations would be to save your money and not go the full program. Do only the stuff for your neck/upper back. Make that very clear to the rolfer at the outset. Also, to reduce the pain, you might take a hot shower before you go for your treatment. The resulting relaxation will help. Maybe a shot ot two of booze, as well. Btw, my treatments weren't painful, to speak of.
Whether you decide to go for that or not, learn tai chi, as was recommended. If nothing else, study and learn some stretching exercises. They are really the minimum you can do.
Chiropractors may be dangerous for you. Shiatsu might be good. It helped my dad a lot, and it's gentle. Yoga? Naah.
S