1) Find the config.ini file
Locate the Eclipse configuration file "config.ini" in the following location:
{eclipse.dir}\configuration\config.ini
2) Find "osgi.splashPath"
Open config.ini file, search for "osgi.splashPath" to find out where the Eclipse IDE Screensaver is saved, for example:
osgi.splashPath=platform\:/base/plugins/org.eclipse.platform
By default, the popup image is saved:
{eclipse.dir}/plugins/org.eclipse.platform folder
3) Find the image "splash.bmp"
Locate the "splash.bmp" image in the following location:
{eclipse.dir}/plugins/org.eclipse.platform_3.3.200.v200906111540/splash.bmp
( 3.3.200.v200906111540
is the version of Eclipse in this case, it may differ from yours)
4) Replace it
Replace the default "splash.bmp" image with your own (you can back up the original).
5) Made
Restart your Eclipse development environment to see the result!