Compare:
<SelectableItemCustomization Id="WebTools" Hidden="no" Selected="yes"/>
<SelectableItemCustomization Id="OfficeTools" Hidden="no" Selected="yes"/>
<SelectableItemCustomization Id="SharepointTools" Hidden="no" Selected="yes"/>
<SelectableItemCustomization Id="LightSwitch" Hidden="no" Selected="yes"/>
<SelectableItemCustomization Id="SilverLight_Developer_Kit" Hidden="no" Selected="yes" />
<SelectableItemCustomization Id="SQL" Hidden="no" Selected="yes" />
<SelectableItemCustomization Id="VC_MFC_Libraries" Hidden="no" Selected="yes" />
<SelectableItemCustomization Id="Blend" Hidden="no" Selected="no" />