To install the boot loader on the Handy board download and open maintenance.zip, and save the the maintenance folder in your LEGO folder. To run the program, double-click on HBdl_XP.exe, click on "Download to Board" and select the HBLOGO.S19 file. Then follow the instructions (turn on the Handy Board while pressing the Stop button). If you get a "Cannot Open Port" error, make sure that the HandyLogo program is not running and that "Comm Port" is set to Com1.