i've tryed but how dos pm work??
You can access your pm in a number of ways.
1. Through your user cp
2. The private messages link near the top of the page where it tells you how many you have unread / total
3. Via the Quick Links drop down menu
If you just want to send a quick pm to someone you can click on their user name in their posts and get a drop down menu where you can send a pm from.
It works pretty much the same as a standard email client.
Hope this helps.
Ed