Php and flash

Hi People
This really isnt a flash isue but I need some help and this section is pretty active. I do have a pretty much all flash site so it is relevant.

My problem is I have a phpbb forum and I would like to make it look like part of my site.

The forum works fine but I just can’t work out how to keep my nav bar and the top bar visible with the forum as well

The forum is accessed through the communicate button.

I have tried frames and a few other things but whenever you load a thred in the forum it loads a new page without my nav and top bar.

I have also asked for help on the phpbb forums but have got no response. It has been over a week.

If anyone knows anything that might help please do.