If you are using Photoshop CS4, the Web Photo Gallery is not in default installed. You can follow the guide below for installing the plug-in.
1. Prepare your photos in Adobe Photoshop.
Fill in the meta information about your photos.
Open the file info diaglog
Fill in the meta information.
Put all prepared photo in a folder.
2. Export your photos to Web Gallery
Open export to Web Photo Gallery dialog.
Select the source folder of the photo.
Select the destination of the photo gallery.
Click “OK” button to export photo to web gallery.
Then you will create a folder, which contains prepared images and necessary files.