If you only want to quote a few lines from the original post, all you need to do is go back and remove the stuff between the "quote" tags. For example, by pressing the "quote" button, I get the following automatically inserted in my reply:
CODE
[quote name='Kelsenellenelvian' date='Dec 29 2007, 05:00 AM' post='724392']
Please post in the proper foum sections. I moved your 2 posts to where they should go as they have NOTHING to do with WinXP they are general forum questions.
[/quote]
All I do is edit the stuff between the "quote" tags to remove text, like so.
CODE
[quote name='Kelsenellenelvian' date='Dec 29 2007, 05:00 AM' post='724392']
Please post in the proper foum sections.
[/quote]
The above will show something like this:
QUOTE (Kelsenellenelvian @ Dec 29 2007, 05:00 AM)

Please post in the proper foum sections.
The quote+ buttons allow you to quote multiple posts, from any threads. You can click on the quote+ button on several posts, and then hit the "Add Reply" button at the top or bottom of the page. All of the posts that you've selected will now appear within quote tags.
Hope this helps!