Solution is found for Shadow problem ... it works for me
StartMenu_GridScene_480x640.cpr
--->added
<Image ID="Background" Left="0" Top="-52" Visible="True" Opacity="1.0" ScalingAlgorithm = "TriLinear" Source=".\StartMenu_Background_Screen_480x640.png"/>
StartMenu_GridScene_640x480.cpr
--->added
<Image ID="Background" Left="0" Top="-52" Visible="True" Opacity="1.0" ScalingAlgorithm = "TriLinear" Source=".\StartMenu_Background_Screen_640x480.png"/>
StartMenu_Global_480x640.cpr
<Image ID="Background" Left="0" Top="-52" Visible="True" Opacity="1.0" ScalingAlgorithm = "TriLinear" Source="ConfettiPlus::WallpaperBitmap"/>
StartMenu_Global_640x480.cpr
<Image ID="Background" Left="0" Top="-52" Visible="True" Opacity="1.0" ScalingAlgorithm = "TriLinear" Source="ConfettiPlus::WallpaperBitmap"/>
this are settings for VGA Touch Diamond
and it works