We have removed this option. The trial version should now support both 32-bit and 64-bit servers without the need to install a stand-alone license. The trial license should be installed during the first execution of the application. If you are having issue and would like a technician to look at the issue please send your contact information to softwaresupport@sharepointsolutions.com.
Jeremy Luerkens
Manager, Software Production
SharePoint Solutions