The private message page you're looking at only shows you private messages that you've recieved, if you don't have any PM's it will do what you mentioned.
You'll need to locate a user's profile or a post by a user to send them a PM.
To find a community member use this page: http://forums.klipsch.com/user/Members.aspx, once you find the member using that search there will be a button in the search result to send a PM to the member.
Or if you find a post by a user to whom you wish to send a PM click the "Contact" button on their post and you should get a menu that has the option to "Send %username% A Private Message", when you click on that you will be able to author and send a PM.
You can test it by sending me a PM if you want.
Hope this helps.
Music is the traveller crossing our world, Meeting so many people bridging the seas...
-The Moody Blues
Main System: 3x Heresy-III "Dark Cherry" (L/C/R), 2x RS-62, 2x RW-8, 1x Icon XW-500d.
Second System (ICON-W): 2x WF-35, WC-24, 2x WS-24, 4x WB-14. (All in "Cabernet")
Check out my system profile for more information...