is your question: How do you PRIVATE MESSAGE a quote???
or is it How do you put a quote in a reply??
cause if you want to quote another person to reply to them in a thread, all you do is press the "quote" icon on the right lower side of that person's post.
um, if you want to private msg a quote, um I guess you'll have to do a cut and paste.
(copied from the F.A.Q page)
Sending Private Messages
Private messages work a little like email, but are limited to registered members of this board. You may be able to include vB Code, smilies and images in private messages that you send.
You may send a private message to a member of this board by clicking the 'Send A Private Message' link in the private messaging section of your user control panel, or by clicking the button in a member's posts.
When you send a message, you have the option to save a copy of the message in your Sent Items folder.