In this dialog you can specify a registry key to be
removed on install. Keys for removal will be marked visually with 
icon.
By default Windows Installer will remove only the resources that were
installed by the MSI package. This removal operation is intended to be
used for external resources created by custom behaviour.
Component
The component whose install will trigger the key removal operation.
Remove On
The time when the removal will be executed. There are three available moments:
- component install
- component uninstall
- both
Condition
Specify a removal condition.
You can specify registry values to be removed upon install from the Registry Value Removal Dialog.
The removal operation is extremely useful when the installed
resources are modified post install and would not be removed
otherwise.