How do I edit my ad?

[wlfluvr]

Hi, I know, i know....I'm a newbie to this forum. But I just posted a "Want To Trade" ad for my mint Nikon Fm2n, and I would like to make a tiny change but can't figure out how to edit the ad. I looked everywhere (that i could think of). Could you help me out...but nothing like "click edit ad"