puja, go to www,micosoft.com and search for the latest version of micosoft office. Download the trial version (usually it is free). Install the software. You might have to restart the compute finish the process. After you are done installing micosoft office, click on START -> ALL PROGAMS -> select POWERPOINT. Click on new pesentation and start your pesentation about dashain/tihar. You can find pictues to put in you presentation @ www.google.com. If you need more instruction,email me at premcharo@hotmail.com. good luck