Center an embed file

[Damien]

How do you center an *embed file* in a pop up window (also needs to be centered when window is larged) I tried something like "center center" but, then it just goes to the upper left of the window.....

*embed file is located on another site (i dunno how it's called but i'll explane it like this; i used an URL to refer to the file, the thing you better don't do because you steal peoples broadband with it.)

I hope my question was clear enuogh,
Cheers

[Jordan]

Put <div align="center"> -embed stuff here- </div>