Hi kirkland,
Putting digital cameras (and memory cards) through airport x-ray machines won't cause harm. There is some concern about metal-detectors though, particularly hand-held wands used by airport personnel. Digital media can be affected by magnetic devices, not x-rays.
We have more information, including what the U.S. Transport Security Administration says about the subject, here:
http://digicamhelp.com/x-ray-and-photo-equipment/airport-x-ray.htmAnd here are some travel tips about insurance, customs, etc.
http://www.digicamhelp.com/learn/camera-questions-and-answers/digital-camera-travel-tips.htmThanks so much for your kind words about Digicamhelp.