In fact, Windows is now so widespread that it would be difficult to imagine life without it. But, with Mr. Gates now pursuing other aims, the powers at Microsoft have decided that just maybe there is an end in sight. Windows Vista, although a most competent operating system, is not without its critics and its successor, Windows 7, promises to be little more than a heavily modified Vista. So, what next?

The increase in broadband speed opens up new possibilities for streaming not just media, but whole applications - or even operating systems. No longer would users be tied to one PC, with all the hassles of licensing, compatibility and frequent upgrades. Instead people will simply purchase or lease a terminal (part of a complete media system eventually used both at home and on the move), connect to their subscription service (the phrase "plug in to" will be consigned to the history books) and work or play as they wish.

Applications would be used on a "pay-per-document" basis and would be subscribed to and enjoyed in the same way that Internet gaming sessions are today. Users will not need to worry about upgrading their media system, other than in the same way that they may currently replace a television, due to normal wear and tear, or the enticement of the latest functionality. They can also forget about investigating software compatibility, since that will all be taken care of by the servers to which they attach. Business will be better able to plan IT spending and will, in the main, see significant savings on support costs.

Science fiction? Not if the bodies at Microsoft and similar organizations have their way.

The rise in virtualization technologies has opened up new avenues for technology developers, from hosting multiple operating systems on one hardware platform, to streaming whole computer images in a short timescale onto waiting PCs. The Redmond software giant has been busy researching all these ideas under a project codenamed "Midori" (not to be confused with the green liqueur of the same name).

Although still very much in the R&D phase, Steve Ballmer, CEO at Microsoft, has already stated a commitment to "cloud computing" and many other companies are currently developing similar technologies. These things may be a while away yet, so don't rush to sign up tomorrow, but be warned - the future is closer than you think.