Open a second window with the post you want to link to on. Highlight & then click copy on the URL from the address bar at the top. Go back to window one and paste your URL adding (url] before your pasted link and (/url] after it, eg (url]This is the link I want you to see(/url] All brackets must be the square type [ and do not leave any spaces
-------------------- If I can't be a good example, I'll just have to be a terrible warning