Windows 7, Window 8 and Windows 10. You will receive the PSG Power program on a CD Via USPS and a link to download immediately. The PSG Power Program has over 300 web site links of interest to pedal steel guitar players and enthusiasts. Designed for easy access to steel guitar web sites with a click of the mouse. Also you may add your own favorite links to the program; this is software like no other. This version has the PSG Karaoke with both the PSG Steel lead and Rhythm Track pre-loaded. Win XP and Win 7-10 both are included on the CD. User can choose which one to install. Most orders will be shipped free on the same day as ordered.