Getting Jdialog reference from AppletContext

Hi All,
I very urgently need your help. My Problem is as follows
From Japplet I am opening a JDialog and is passing the appletContext in Constructor. This appletcontext I use to get some common resources like images etc from a common java file.
Now the problem is that from this appletcontext can I know the instance of the dialog ?
In all my applets and Dialog a common file method is called to get the images to which the appletcontext is passed. From this method I want to set the height, font and font size of all the components. I have been able to do so for the applets as I can get all the components from the appletcontext, but I am not able to do it for dialog.
Somebody please help me how from appletcontext I can find the dialog from where I will be able to find the components of the dialog.
Thanks
Chetan