Windows 95/98
Up Windows 95/98 MS Dos 7.0

 

This is the most widely used OS. Currently the latest version is win98, however I prefer win95 as win95 is a much smaller install (50 megs) whereas win98 is huge (200 megs). There are not that much improvements in win98 over win95, just an inclusion of IE4 and some more system utilities. This hardly justifies the upgrade when the utilities are readily available from third party companies such as Norton Utilities which are far superior to those in win98.