Back in the day I remember installing Nesticle, Genecyst, NO$GMB, and an early version of MAME on Win95 machines, but those were all DOS based and would run just as well without Win95. I can't remember using any native Windows emulators back then. I'm sure they were out there, but they weren't an option for the under powered machines I was playing with - playing Pokemon Red in NO$GMB on a 386DX40 for example. I also played with emulators for various 8 bit home computers such as the ZX spectrum, Amstrad CPC and TRS-80, but again these were all DOS based emulators running inside Win95 or Win98.