Ingame you will find two buttons under the game log window. They are displayed as such; /DM and /P#
Simply click either to send a PM to either a player or the DM.
To send to a DM type or click the button and enter your message like this;
/dm Your message
*note the space between the /dm and the start of the message.
Same thing for players. Example; You simply need to replace the # with the players ID (either p2, p3, p4, p5 or p6)
/p3 Your message
*note the space between the /p# and the start of the message.
To send a message to player 3 type
/p3 example of whatever you want to say
To send to player 4
/p4 example of whatever you want to say
I have attached a few screen shots to show the PMing in action. Your personal screen will send your message tagged with (PM) on it, plus the full message with the player ID in front so you can tell which person you sent it to in case it gets crazy
PM's are always designated in RED