Naki:
Just put a [img] hard-up against the start of the URL, like this:

[img]http://www.photosite.com.....

Then at the end, put a [/img] like so:

...photosite.com/nakisphotos/bigbull.jpg[/img]

Make sure there are no spaces between the square brackets and the actual URL address.

This is all explained in the NE.com FAQ pages, here:

http://forums.nitroexpress.com/faq.php?Cat=0#image

Hope this helps.