4 questions on MSI editing

Dear pals,

(1) Can DSN username and password be embedded into ODBC resource settings of an MSI package?

(2) If network drive mappings are required, can it be done in InstallShield?

(3) If component files are to be copied to Drive D:, can it be done with InstallShield?

(4) How can a few MSI files be merged into a single one?

Thanks for your answers.