[WiX-users] Burn prerequisite(4 numbers) warning message before installation

[nithin v <get...@gm...>]

Hi,
I have 4 prerequisite softwares which has to be installed before our
software. When the user tries to install the package, a message should be
displayed saying out of these 4 what and all packages are not installed as
a single message.
Please help me how to do this,as the test sample which I am trying is not
giving the all the messages

<Fragment>
    <util:RegistrySearch
          Id='REG_SEARCH_ASP_MVC3'
          Variable="Default"
          Result="exists"
          Root="HKLM"

Key="SOFTWARE\Microsoft\.NETFramework\policy\Servicin\System.Web.Mvc,
Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <util:RegistrySearch
          Id='New_REG_SEARCH_ASP_MVC3'
          Variable="new"
          Result="exists"
          Root="HKLM"

Key="SOFTWARE\Microsof\.NETFramework\policy\Servicing\System.Web.Mvc,
Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

    <bal:Condition
      Message="mvc3 not installed.">
      <![CDATA[Installed OR Default]]>
    </bal:Condition>
    <bal:Condition
      Message="some other software is not installed.">
      <![CDATA[Installed OR Default]]>
    </bal:Condition>
  </Fragment>

Above is just a sample. Whole idea is, I need message to appear at one
screen.

-- 
Thanks and Regards
Nithin