I was looking for such a device, and then I ended up as a (poor) student at Labtec Wireless Presenter. Knapp 30EUR I found reasonable was unfortunately nowhere to bring in experience, whether the device works with linux. "No Risk, No Fun" I thought to myself and have the thing just ordered. 1.5 days later the Amazon postman came and brought me the good piece. After a short test was clear: The device (or the USB receiver) logs on to the system as "USB HID device" on, so no extra driver works! On Linux and Windows XP. I tested successfully OpenOffice 2 under Linux 2.6 and OpenOffice 2 + PowerPoint 2003 on Windows XP. Conclusion: 5 stars (especially for the price).