First, you have to get the picture URLs from someplace, anyplace. One way is to go to this board's "file upload" link. Here are three jpeg url's (click them and see):
http://www.antiquegamblingchips.com/crest/bison.jpg
http://www.antiquegamblingchips.com/pictures/arab.jpg
http://www.antiquegamblingchips.com/pictures/aguac4.jpg

Then you put each url between [pic ] and [/pic ] like I did here (but note that I purposely left a space after the "c" in "pic" so everything would show up in the text here.):
[pic ]http://www.antiquegamblingchips.com/crest/bison.jpg[/pic ]
[pic ]http://www.antiquegamblingchips.com/pictures/arab.jpg[/pic ]
[pic ]http://www.antiquegamblingchips.com/pictures/aguac4.jpg[/pic ]

If you eliminate the space after the six "pic"s, you would get this:

If you put them like this (one after the other -- the page setup here cuts the lines short, but that doesn't matter -- just type it one after the other -- I copy/pasted it here);
[pic ]http://www.antiquegamblingchips.com/crest/bison.jpg[/pic ][pic ]http://www.antiquegamblingchips.com/pictures/arab.jpg[/pic ][pic ]http://www.antiquegamblingchips.com/pictures/aguac4.jpg[/pic ] ,and then removed those six spaces, you get this:

You can try this here using the previews to test it out.

Robert