1)   Multi Screen Emulator for Windows 1.4
MSEW allows you to create and configure up to 8 virtual screens to simplify switching between different tasks. Switching of virtual screens is performed by using the MSEW panel or by hot keys.
multiple screens, multiple desktops, extra desktop, multiple, screen, virtual desktops,

 2)   vdesk v 1.00 r 4
A Virtual Desktop System for Windows. The Virtual Desktop Manager implements multiple independent virtual desktops. comes with a sophisticated wallpaper changer that allows each of the multiple desktops to have independent wallpaper.
Virtual Desktop Manager, Virtual Desktop, Windows Wallpaper, Wallpaper Changer, Multiple Desktops, Virtual Desktops, Virtual Terminal,

 3)   Magic DeskX 3.2
Slide Show digital photos on your desktop, View videos on your desktop, Play Flash on your desktop.
desktops, wallpaper, Slide Show, flash, realplay, media player, virtual desktops, scene,

 4)   DesktopSwitcher 1.5
DesktopSwitcher is a simply utility for the Windows XP Operating System to manage 'virtual' workspaces/desktops. It will integrate smoothly into the desktop panel.
Virtual Desktops, Virtual Workspaces, Desktop channels, Desktop Split,