Including external bits like fusion charts

How would one include a page within a rax-box? I am trying to make a dashboard with some kpi's and i have the load page test.php and the view (dashboard.html) that loads 4 small rax boxes. In one of those rax boxes i want it to include the content (output) of this file graph1.php. I have tried a couple of methods but cant seem to nail it
Hopefully someone on this forum can point me in the right direction. If i just run graph1.php it works perfectly and is a page with a flash file in it.
