Quicktime problem

I am having a problem with my quicktime file. The import works fine on my end using a mac. But when I try to view my movie clip on a pc the quicktime logo comes up then it just shows a white screen. I have tried different types of plugins, and nothing seems to solve the problem. Is there anythhing on my end that I need to change? I am very new to this and I am trying to work my way around.
Thanks