component selection

My requirement is to install two components --server and client based on the users choice.
I have used the selectcomponents(sdComponentTree dialog) dialog box for this purpose through the project wizard.
I want to know
1) which component the user has chosen because if the user chooses the client component then i have to register one x file( a com server exe) using regserver and if the user chooses the server component then i have to register the same x file as service.
The sdComponentTree dialog box does not return this info.