New icons but I need to change the key too

[S Mac]

I've just used some new icons on the index of my forum but I forgot that I have to change the key too - where lists the icons and tells you what they mean, like 'no new posts' etc. Can you please give me a step-by-step how to do this?
http://blackbeautyhaircareforum.org.uk/smf_2-0-2_install/index.php

[ApplianceJunk]

change it here...

http://blackbeautyhaircareforum.org.uk/smf_2-0-2_install/Themes/smf-curve/images/new_redirect.png

[S Mac]

Thank you!

[ApplianceJunk]

Welcome