If your website is programmed with Image Gallery uploading photos is easy
Step 1: Login to your website via the manager/admin area
Step 2: Locate where your image gallery has been setup in the site tree
Step 3: Right click on the page and select preview
Step 4: You will see a preview of the page, however a button will appear. This button will say manage pictures (Click this)
You will be take to a page that now allows you to browse images on your computer and upload them. Select up to 10 at a time.
Tip: Make sure you decrease the size of your images. A simple application like microsoft picture editor is capable of resizing the dimensions of the image so that when you save it as a JPG it will be in a compressed format.