A practical approach is to make the DVD as a small self-contained website rather than relying on special disc-viewer software.

Organize the photos into separate folders such as:

• thumbnails
• screen-sized images
• full/print-resolution images

Then create an HTML index page that shows thumbnail images and links each one to a larger screen version, with an additional link to the full-resolution file. This gives you the same basic experience as an online gallery, but offline. It also keeps the full-size files in regular folders, so clients can browse or copy them directly without needing any proprietary software.

This approach is useful because:

• it’s unbranded
• it works with standard web browsers
• you control the layout and grouping
• no special installation is required

If you want it to open automatically, you can add an autorun/autostart solution, but browser-based HTML is the core idea. In short: build a simple offline gallery using HTML plus separate image-size folders, and burn that structure to the DVD.