@Caroline,
the only place I know how to do it is here, but I suspect the general principle is the same
grab the link
i.e. the link to your post
http://able2know.org/topic/159747-1#post-4309518
use the appropriate url code
[url][/url]
put = inside with the url
url=
put your link behind the url=
url=http://able2know.org/topic/159747-1#post-4309518
put the title you want between the [url][/url]
[url]Caroline's post[/url]
when you put all of that together
Caroline's post
that ^ should be a live link back to the first post
(if you "quote" my post you should be able to see the mashup)