Well, we are all pacific members in this forum. We don't resort to violence, and do not engage in conficts of any kind.
Sorry, I couldn't resist that. I assume you want to contact a specific member. If that's right, you can use the Private Message system. To do so, just click on the "Private Messages" link in the second-row menu near the top-left of the screen (below the Home link). Next, click the "Send New Message" link in the left-hand sidebar.
You will need to know the member's username (the one you see in the forum threads) - or at least the first few characters of it.