The original thread is here.

Richard - you're a big boy now - it's ever so easy to do clickies, there's even a special tool to help you now. Just copy the URL (that's the web address which displays in the Address box at the top of the browser) of the page you want to link to onto the clipboard. Then when you're composing your posting, click on the "Make a link ("blue clicky")" link at the bottom right of the text box. Paste the previously copied URL into the Link URL box, type the text (eg in the link above - here) into the text box and click "Make Link". The constructed link will be displayed and can be copied and pasted into the posting text.

Note: if the link is to somewhere else on the mudcat site you can remove the http://www.mudcat.org/ from the front of the URL - if it's not on the mudcat site you MUST have // at the front somewhere.

Hint: it's easiest to open a second browser window (File -> New -> Window) for the site/page that you're making the link to.