You can load and save particle environment files (.par) with the "Open" and "Save As..." menu items under the file menu.
Additional particle environment files are available through the Somatic Vision website at http://somaticvision.com. You can post particle systems that you have designed, and download particle systems that other users have designed.
When saving particle environment files, the constant settings, feedback settings, music and environment description are all saved, as well as the path to any custom background image or custom particle image. If you wish to share particle environment files with custom background or particle images, you must also include your custom images as they are not included in the .par file.
When you open or save a particle system file the default directory is "presets" under the particle editor installation directory (normally C:\Program Files\ParticleEditor\presets).