if you click on your ID on the left hand side of any of your posts/comments/replies you will get a list of your most recent posts.  As Dave is referring to a post of yours that is not on this thread you can click on the reply you posted on another thread.  Dave's reply will be somewhere below your post.

If this is all gobbledegook to you, then click on this link: http://community.ebay.com.au/t5/Selling/Scam/m-p/976135#M48017