The Smoke & Steam Screensaver shows 19 scenic images of steam railroading. Included is the multiple shots of the Union Pacific 3985, and 8444. See the Durango & Silverton, Grand Canyon Railroad, and shots of the Heber Valley Railroad. Included is the Heber Valley double header in the snow. System requirements: Windows 95/98/NT,2000. Resolution of 800x600 or greater is strongly recommended. 16-bit color or greater is also strongly recommended. The screensaver comes with an easy to use setup program. The demo version is only some of the images and by registering the software, a key will be sent to you to unlock the full screensaver.