You will need to download the SimpleViewer extension for 90 Second Website Builder from their own website: http://90secondwebsitebuilder.com/1/ver … xtensions/
Please note that extension downloads are restricted to registered users of 90 Second Website Builder so I do not have a direct link.
Instructions on how to install extensions can be found here: http://90secondwebsitebuilder.com/1/hel … xtensions/
There is also a video tutorial on how to use the SimpleViewer extension here: http://90secondwebsitebuilder.com/1/vid … extension/
Instructions to upgrade the extension from SimpleViewer-Standard to SimpleViewer-Pro should be inside the extension package. Essentially, you will need to replace the 'svcore' folder within the extension's file's with the 'svcore' folder from the SimpleViewer-Pro download package ('simpleviewer_pro_231/web/svcore').
If you choose to embed your gallery manually (following the instructions in the SimpleViewer Embedding Guide and not using the 90 Second Website Builder extension) and run into problems, please post the URL to your gallery page so that I can take a look and help further.
SimpleViewer Support Team