[Poser]

"I still don’t know how to post pictures on Freerepublic.

img src="Your url here including http, etc"

Then put less than and greater than signs around it

Example:
<img src=http://www.comicsbeat.com/wp-content/2007/09/salma_hayek07.jpg>

Yields:

[re_tail20]

Thanks.

It worked.