MSN was provided by Bell Sympatico, and has been included in older Windows editions (9x, Me) to easily create and connect with dial-up or broadband using a modem.
The widespread change from Windows 9x to Windows XP for many home computers, which started in early 2002 and was well under way by 2003, greatly accelerated the use of home computers to act as remotely-controlled spam proxies.
Microsoft Windows | Windows | Windows Vista | Windows 7 | Windows XP | Windows 95 | Windows 2000 | Windows 8 | Windows Mobile | Windows CE | Windows Media Audio | Windows Phone | Windows NT | Windows Media Player | Windows Phone 7 | Windows 98 | Windows on the World | Windows Live Messenger | Windows Server 2008 | Windows Server | Windows Me | Windows 9x | Windows Store | Windows Phone 8 | Windows Media | Windows API | Windows service | Windows Server 2003 | Windows 8 editions | Windows 3.1x |