Ok, about a week ago I was on vacation and I got an error on my new Digital Rebel XT...Whenever my flash would pop up, I would get an error that would say error 99...I wouldn't be able to take any pictures after that, so I would turn the camera on and off to fix the problem...I haven't gone to the store where I bought it from yet, but I plan to. I also plan on calling canon techinical support..

Does anyone know what this error is or how to fix it?

Thanks,
Nigel