In a picture sequence, how do you

I am having an issue with importing a sequence of .PNG image files, the problem being that I am not finding any mention of how to center [on the stage] all of the PICT files w\o doing it manually, and did I mention it’s like 400+ images?? So naturally doing all of those 1 x 1 would become insanely monotonous. There has to be a way to achieve this in a more efficient manner…right? If anyone knows how to overcome this not so small task at hand (literally,…atm!!) please lemme know!! I’d be most thankful!!!