Ilmerge of a win application shows a console window - how to hide it

[Keng]

The unmerged version of MyTool.exe does not show a console window while this merged version does. The project settings for MyTool is Window Application. Any help with the settings for ILMerge?

c:\"Program Files"\Microsoft\ILMerge\ILMerge.exe  ^
    /target:exe ^
    /out:MyTool.exe ^
    ..\library\MyTool.exe ^
    ..\library\CalCurves.dll ^
    ..\library\EngProfiles.dll ^
    ..\library\SpreadSheetProcessing.dll ^
    ..\library\SpreadSheetConverter.dll ^
    ..\library\Tlm.dll ^
    ..\library\TlmFormat.dll ^
    ..\library\XmlConverter.dll ^
    ..\library\Cmd.dll

[Keng]

My description needs further follow up. Without the dll's merged into the exe, the application executes without a console window. However, when they are merged into the exe, the application has an undesired console window along with the form. So I thing there must be an ilmerge setting to handle this.