item level menu item in visual studio 2010 ide

Hi,

I am writing a Visual Studio extension and adding a menu item to an existing menu (such as the project context menu) using a .vsct (Visual Studio XML Command Table) filehttp://msdn.microsoft.com/en-us/library/bb166366.aspx. I was able to add new menu item at Project level, now I have other requirement of adding other menu item when user click on file level new menu item, button  has to display  just below Open menu item.

<Button guid="" id="cmdidCreateMockService" priority="">
        <Icon guid="guidImages" id="bmpPicSearch" />
        <CommandFlag>DynamicVisibility</CommandFlag>
        <Strings>
          <CommandName>cmdidRunThisFile</CommandName>
          <ButtonText>Run this file</ButtonText>
          <MenuText>Run this file</MenuText>
          <ToolTipText>Run this file</ToolTipText>
        </Strings>
      </Button>
    </Buttons>

Thanks,

Showkath

Best Regards Showkath