Windows 7

[rosnarun]

but the OS start at version 3 and are now at 7? 

well not really. Windows 3 wasn't really an OS but rather an environment running on DOS, as was Windows 1 & 2. I have copy of Windows 2 somewhere, perhaps I'll sell it on Ebay if the cuts get really bad. The first real OS was Win 95. Now leaving aside the Binary aspect of things you had Win 95 (4??) WIn 98(5??), Win 2000 (6), Win XP (7?) and Vista (8?).

youse boys are forgetting about GEM. which i tink was considers Windows 1 and 2 i used to run it on top of Msdos  which was the same way windows 3 work. ie you used to boot first and then start windows ( ok you could used start up programs but GEM was a pain in the hole with 512K memory and just a single 5 1/4 disk. so i rarely actually used it.

As for Windows 7 , can any one give an absolute killer reason  to migrate from XP.