This may shed some light on the subject. It's pretty easy to get an external variable (like say from an asp recordset -- i.e. Access) into Flash, and then you can use that to size the graph however you need it...
So first, you would need to get your number, however it is that you wish to do that. My method of choice is ASP, and we'll say that that variable is already assigned to a server side variable called 'graphSize'.
You would then just need to write a very simple javascript function that would be called on your body onLoad event in order to get the variable into flash. It would look like this...
function loadIt(){
document.movieID.SetVariable("flashVariable", <%=graphSize%>);
}
Where "flashVariable" is the variable inside your movie that you are setting with the 'graphSize' server variable. You do not have to explicitly declare the variable in the .fla file... the above function will create and assign it for you.
you would call it like so:
<body onLoad="loadIt();">
You'll need to get someone else here (like OldNewbie, davDesign, or one of the other great folks in this forum) to help you with the actionscripting part to assign the variable to the size of one of your internal objects in flash, which would assumably be your graph.
I found that the other day, used it on a page, and it works like a charm. Short and sweet.
good luck!

Paul Prewett