Hello! Thank you for your answer!!
Now I took Picasa,
I have downloaded the Simpleviewer Picasa template, and then as the instructions:
# In Picasa, select the images you want in your gallery, then click Folder -> Export as HTML Page...
# Select your image size and gallery title.
# In the Select a Web Page Template page, select SimpleViewer.
I have no such question, so I cannot choose Simpleviewer
I only can choose a folder where to save the website
What is wrong? Thank you very much!