We're well on our way to answering our own question. CodeGear does have a merge file that can be referenced in InstallAware Express. We're struggling a bit with the fact that it sets up the default configuration file under program files which means it can only be modified by the Administrator but we...

Is there an easy way to see what the themes look like to know which one to choose?

We have the Express version from C++Builder 2007. Can we use this technique to install the BDE or will we need a more powerful version of InstallAware? We're having a lot of trouble trying to get the BDE to install properly in 64 bit Vista. I'm pretty sure we're going to have to install the BDE some...