Windows 7: Tested in depth

Although the look of Windows 7 may seem to be nothing more than some polish applied liberally to the Vista Aero theme, make no mistake: this is a full replacement operating system, and more than just 'Vista done right'. From driver support to multitouch groundwork for the future, from better battery management to the most easy-to-use interface Microsoft has ever had, Windows 7 is hardly half-baked.

The first thing that should stand out is the new taskbar. This is one of the best improvements Microsoft has made -- third-party program dock makers are going to have to do some serious innovation when Windows 7 goes public. Besides incorporating the translucent style of Aero, the new taskbar is arguably even better than the Mac OS X dock.

It features pinned programs using large, easy-to-see icons. Mouse over one and all windows associated with that program appear in preview. Mouse over one of those preview panes to reveal an X to close the window. Hover over the preview to show a full-size preview of the program, or click on the window to bring it to the front. Because of the button size, people with touchscreens should find it especially easy to use.

Jump lists are another new taskbar improvement that make recently opened documents easier to get to. Right-click or left-click and drag on any program icon pinned to the taskbar to see a list of files that you've recently used in that program. In Internet Explorer, this will show recently visited Web sites, although it doesn't yet seem to work in Firefox.

If you've noticed the missing Show Desktop icon, that's because it's been baked into the taskbar itself. Mouse over to the right corner. Hovering over the Show Desktop box reveals the desktop and then hides it when you mouse away. Click on the box to minimise all your programs.

Resizing programs has been simplified and improved by the capability to drag a window's title bar. Drag a program window to the top of your monitor to expand it to full screen. If you want to work in two windows simultaneously, drag one to the left edge and one to the right edge of your screen, and they'll automatically resize to half the width of your monitor. Dragging a program away from the top or sides will return it to its original size. This is an entirely new feature in Windows 7, but it should prove easy to adopt because it mimics and expands on the maximise/restore button that people have been resizing windows with since Windows 95.

Theme packages also make it much faster to change the look of Windows 7. From the Control Panel, you can change the theme under Appearance and Personalization. Microsoft has created several theme packages to give people a taste for what the feature can do. Click on one to download it, and it instantly changes the colour scheme and background -- no need to reboot. Users can create their own themes as well.