How do I make my header static?

[RecklessTim]

I have a compact header that I would like to remain static on the top of the pages. I've searched and haven't seen anyway to do this.
Is this something that can easily be done or should I move on to my next project?
Thanks

[dreads]

You would simply remove all output HTML from the header and put it in another file (index.html), which has an iFrame going to your site