A lot of people are not happy with the stock-look of the dialogs in an InstallShield installation. The good news is that you can change the look of your installation. I have never done it, but I have looked into it before for different projects. Here’s what I’ve learned.
You have two choices to change the look of dialogs, skins and themes. Dialog Skins are used with InstallScript MSI and InstallScript projects. Dialog Themes are used with Basic MSI projects.
Dialog Skins enable you to display dialogs with a different look and color scheme. Skinned dialogs are slightly larger than standard dialogs and the controls are located differently. For skinned dialogs to be displayed properly, the desktop area must be at a resolution of at least 800 x 600 pixels and the system must display at least 16-bit color. To use dialog skins, you need to download and install the Dialog Skin Customization Kit from the InstallShield website.
Dialog Themes are predefined sets of images that give your end-user dialogs a unified and different look. With only a click of a button, you can select one of the available themes for your project and InstallShield will apply that theme to all the interior and exterior dialogs, as well as the Setup.exe initialization dialog. You can preview each dialog theme from within the Dialogs view of your project. Currently, InstallShield does not allow you to create your own themes.