I thought I had posted these before...whoops, my bad. I just read through your thread, and I see I posted health anxiety links for you...but not these.
These are absolute gold for managing anxiety. Practice them (pick your favorites) 3x a day for a week and see how you feel.;)
Self Help sites with breathing/relaxation exercises instructions
Panic attack relief exercises:
http://www.healthcentral.com/anxiety/c/73076/34334/breathing-lessons/
http://www.healthyplace.com/
http://www.stress-relief-exercises.com/
http://www.ehow.com/video_4405003_breathing-exercises-panic-attacks.html
http://www.psybersquare.com/anxiety/panic
S.C.