Super Mario 64 - Secret Stars 1 and 2 in Peach's Secret Slide Video Walkthrough
In the main lobby, go up the stairs and go right to the 1 Star door. Jump through the window to the right, with the picture of Princess Peach.
In order to get both stars, you will need to complete this level twice. The first time you will get a star just for completing the level, and the second time you must get a fast time (20 seconds or so) to earn the star.
Super Mario Video Walkthrough Series for Nintendo 64
