I wrote it in my first answer! Click on the menu Project and on the bottom is list of your recent projects. Open your project. Or you can open project by simple use Project / Open and navigate to your PSPad project file Or click on the small arrow next the open project button and there is again list of your project files. Choose the right to open it.
-- <http://forum.pspad.com/read.php?2,63171,63183> PSPad freeware editor http://www.pspad.com
