Joe,
When your application installer's bootstrapper installs UltiDev Cassini, it is done with no user intervention whatsoever. Bootstrapper (Setup.exe) does display read-only "downloading" and "installing" messages, but that's about it. UltiDev Cassini runtime installation packages are MSI-based, so you may want to look into MSI API to see how to run completely UI-less MSI installation. Msiexec.exe does show some UI, even in quiet mode, so you may have to do some programming in order to make it completely UI-less.
Could you please tell us what is the business case for completely UI-less installation? We would like to consider how important this feature might be for others.
Please let us know if this information was helpful.
Best regards,
UltiDev Team.
Please donate at
http://www.ultidev.com/products/Donate.aspx to help us improve our products.