With JoyDS you can use your DS as a wireless Joypad for PC. It’s a Client-Server App, where DS is the Client and PC is the Server. The Client gets input from the DS and sends to server in UDP packets. The server receives the input and uses PPJoy to emulate the Joystick. JoyDS emulates a real Joystick, no keyboard or mouse. You don’t have to configure nothing inside PPJoy, the Server does all the hard work for you. It also has some cool features like Button Sequences and Multiple Consoles. You need .NET Framework 2.0 to run the Server.

Thanks to http://www.dcemu.co.uk for the news.