-How do i remove maximize/minimize/pin options from the top of rad window. I only want to show close option .
-Also modal=true property is not working. whenever window showup it does not grey out background page.
To just display the Close option you should be able to use the Behavior property and choose Close.
Setting Modal to True should be enough to set it to modal.
Perhaps more detail about what you've done to get to this point.
thanks
Jordan