terms and conditions in medruck

Hi,

I am working on medruck. I need to display terms and conditions in a window. Currently standard program is printing terms and conditions in main window but no box is displaying. I need to put a box for this terms and conditions.

But the problem is based on conditions the window size needs to be changed. how to achive this one. I am not modifying the standard program.

And on more thing is I am printing a uline of length 79. But the lenth is varying from one PO to another po why it is giving like that? I could not understood.

So please helpme out in this regard.