Ummm...help?

I just signed up yesterday, and to be perfectly honest, the only reason I joined was to talk to a friend who I rarely reach over MSN anymore.
Unfortunately, when I made my username, I think I accidentally disabled my ability to send/recieve friend messages when I was trying to enable it. Yes, yes, I know, stupid me. (._.')
Anyway...um...how do I enable that again?

You need 10 posts to send private messages (PMs).

Ohhhhh.
Thanks.