You have to upload them to the internet, somewhere, and then type in the link, here in your message.
In the following text, you just substitute a < (that's shift-,) for a { and a > (that's shift-.) for a }. These opening and closing marks tell this server that you're embedding a picture.
{IMG SRC="http://members.rennlist.com/jackolsen/FrontLeft.jpg"}
Now change the brackets to greater and less-than signs, and voila, it will come out like this:
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Jack Olsen
1973 911 T sunroof coupe
http://members.rennlist.com/jackolsen/Jalopy.html
[This message has been edited by JackOlsen (edited 06-13-2000).]