The Win95 Upgrade version had a dual boot option during install. SR2 does not. Try System Commander. This will allow mutiple OS on the same machine. Mike Cormier wrote: > What is required to run Win311 and OSR2 on the same pc? I > have a program > that refuses to run in any of the Win95 builds and > therefore I need to > install Win311, or do I have to install Win311 then a > version of Win95? -- Roy G. Schriftman, MS, MBA Instructor Computer Science, Manager Computer Laboratory e-mail [log in to unmask] icq #6705829 - jusAhack Office 215-596-8935 Home 215-635-1720