Unique question regarding flash in my header

I am wanting to move my personal family history site from html based to wordpress. However, I wish to use the same flash headers on some pages that iI use on the old site. My husband, whom I lost 2 years ago, made me these flash images and I wish to continue using them.

You can see what I am talking about here:
https://www.katsfamily.info/wp/?page_id=3

As you can see, I made a header that fits this theme, and placed a still image where I wish the flash image to sit on top. This is, of course, a background image.

The problem is I do not know how to make a flash image show there. I have installed a plugin that lets me show flash, as you can see in the one I put above the writing. It is resized to fit the space. I can use the plugin easily to add this image to my pages. What I cannot figure out how to do is make it sit in the center of the header. Can anyone help me?

An additional complicating is that I need to be able to display different images on different pages.

Thanks