If Trav can do it, everyone can. An easy way is to bookmark your page; then copy or cut the bookmark and after erasing your "Optional Link URL" paste it in the box. You can copy and paste the URL into the message box like this--just click the location box and when highlighted hit EDIT and COPY--return to your document message box and hit "paste" in Edit.
http://www.thechipboard.com/cgi-bin/tcb/config.pl?read=89480#PostResponse