I have here a goon-only release which should give you an idea of things to come. It will raise the age old question- who needs a mouse when you have a DS? With this program you can WiFi to your computer and use your DS as a tablet-type mouse. In the future, I'm going to try to make the program into a full-featured RemotePC type thing, but I thought this was neat enough to share.
Run the server .exe, and hit start, it'll auto minimize if it sets up without problems. Double click on your LAN connection in Network Connections in XP and go to the Support tab to find all the info the DS program asks for, it'll say you are connected to the AP, even if you have the wrong info, so make sure it's right. If you connect successfully, use the touchscreen to move the mouse and the L button to click. Please enjoy responsibly.