Andy_S,
Not seen it done that way before! Interesting!
Just so that From Tunbridge Wells knows the 'standard' method as well:
1) Click the 'Reply' button
2) On the 'Reply To Thread' page, just above the writing area, are a couple of rows of icons. In the second row, 3 icons in from the right-hand end is an icon that looks like a small comic speech bubble - click that.
3) The words {QUOTE}{/QUOTE} will appear in the writing area - just paste your copied quote between these words and their square brackets!