From Krzysztof Olczyk:
Multidesktop is a plug-in gadget for Google Desktop which emulates the multiple desktops in Windows. Once installed you have available in your Google Desktop bar or on your desktop the button to create new virtual desktop, the list of created desktops and the preview area where you can see the preview of a content of a desktop you are hovering mouse over in the list. If you want to remove gadget - all the desktops are merged together. Gadget is available in English, Polish and Spanish language version. This version is the first release on CNET Download.com.