I think a lot more people these days use Vista or OS X than other things in that category like Windows NT/95/98/Me, which could probably be phased out or eliminated.
These two are both going to be recieving a lot of press coverage over the next 6 months, with the pending release of Vista and OS 10.5.
These two are both going to be recieving a lot of press coverage over the next 6 months, with the pending release of Vista and OS 10.5.