This article is from the eBay FAQ, by William B. Shaw firstname.lastname@example.org with numerous contributions by others.
You can do this two different ways. If you don't want to spend any time
learning html (the language of the web), you can take advantage of eBay's
picture services for a nominal fee for up to six pictures. For those will
basic skills, you can upload the pictures to your webspace and then link the
pictures into your auction description using an IMG tag.