Eh, im not 100% on this, but im pretty sure if you want sum1 to remotely link that image in the HTML, you have to use the entire URL instead of the files location in relation to the site root.
ie: "img src="external/button_tig.gif"" will only work from this site.
but "
http://www.clan-tig.org.uk/external/button_tig.gif" should be used for external linking.
*cleans nerd glasses*
If im wrong, feel free to flame me. :shock: