OK!
First, you must go to your signature box in your Cp (control panel). Once your there, type (this might some out as an errored image)[the img code] The Exact URL AbeBabe gave you- then [the /img code]. ONce that is finished (typing), go to the 'finish' type bottun on the bottom and click it!
If you did it correctly it should come out like this:
http://www.oddworld.au.com/misc/banners/munchonthis.gif
If that does'nt work, I don't know what to tell'ya.................
Mudokon101...