Download and double click to install. You can run it either by waiting for your screensaver to come on, or double clicking on the desktop icon, then clicking the "Run" button.
If you have trouble, see the help page.
System Requirements: Windows XP or better. The screensaver may require the latest graphics drivers to run properly. If it doesn't run after installation, check your computer manufacturer's website. If it crashes instantly even with the latest drivers, then try setting the monitor number to 1, 2, or 3. And if that doesn't work, then turn on Direct Draw mode in the advanced settings. If you have this kind of problem and want to beta test a fix, please email us (click help for the address) and put "privbeta" in the subject. Thanks!
If it's still not working, get the diagnostic program GPU-Z and send us the output from it and DxDiag and your log file (on XP look in C:\Document and Settings\All Users\Application Data\ElectricSheep, or on Vista C:\ProgramData\ElectricSheep). You can turn on logging in the advanced preferences.
See comments below for how to set a proxy.