Windows 7 Tip: 
DeskTask will connect to MS Outlook and display your calendar and task items on the desktop. DeskTask is freeware. It can be freely used and distributed in commercial and private environments, provided the supplied Zip file is not in any way modified and there is no charge for it other than nominal handling fees. Desktask will periodically access Outlook and refresh its displayed data according to a user-defined time period.
Features:-
· Your tasks will always be visible, saving precious time to launch or switch to Outlook.
· Just minimize every window, and see what are the items due for today or tomorrow.
· DeskTask displays the whole week so you can be prepared to organize your work.
· Besides the calendar items, the Outlook to-do list (Folder Tasks) is also displayed. If you work with Outlook, DeskTask is for you
This prog would be good if it supports Cyrillic encoding, at particular Russian. But it doesn’t. That’s why I use other desktop calendar tool -Screen Calendar Outlook – to display my Outlook tasks on the desktop.