Re: Web Photo Gallery Missing from Photoshop CS4 
adobe.photoshop.windows Google Group | by russell_pro...@adobeforums.com | Sat, Nov 8
adobe.photoshop.windows Google Group is the #7 Blogger for Adobe Photoshop
Just to let you know that I followed the instructions in the PDF. Here they are sightly re-edited by me:
Close Photoshop and use Explorer to view the extra stuff on the CS4 install DVD.
Here's what you need to copy from the Photoshop CS4 install disk and where it goes: