Windows best shortcuts revised

various sources
This material has been copied from various sources so no offence!
ALT + TAB
Move between active applications.
WINKEY + M
This will clear your desktop in an instant by minimizing all active applications.
WINKEY + E =
Opens explorer windows with the folder sidebar enabled
WINKEY + D
This will also clear your desktop, however if you press WINKEY + D once more the applications will reappear.
WINKEY + L
This will lock the computer; you will still have to unlock it by pressing CTRL+ALT DELETE.
WINKEY + F
This will open the search assistant.
WINKEY + R
This will open the RUN command prompt.
WINKEY + B
Sets focus on the task bar, you can navigate by using the arrow keys; press ENTER to open one of the applications. You can't really see which icon is selected, but just wait a moment and the application info text will appear. If you press TAB the focus will be set on the desktop.
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The following shortcuts will work in almost any office application environment; I am especially pleased to use them when I browse the web.
CTRL + O (CTRL + L)
This will open the location field. In Internet Explorer you can use this to type in a web address.
CTRL + N
This will open a new application window, either an empty window or a clone.
In Internet Explorer the new window will show the same URL. So it is useful if you want to maintain the old browser window, and not having to leave the keyboard to open another browser window.
CTRL + TAB
Use this short cut to move between tab panes, use CTRL + SHIFT + TAB to move in reverse order.
Some Shortcut Keys you might enjoy
Windows XP is full of many KEY-Combo Shortcuts to access Feasures quickly. Here are some of the shortcuts you may find most useful.
WINKEY + PAUSE/BREAK =
Opens "system propertieS"
SHIFT + DELETE =
Delete a file without sending to Recycler first (NO RECOVERY!)
F5 =
Refresh (Usefull in Internet Explorer)
SHIFT F5 =
Reload Webpage from scratch (NO CACHE)
CTRL + SHIFT + END =
Highlight everything down a Text page from current possition (USE HOME for up)
ALT + CTRL + DEL =
Ahh, an old favorite. If an App. is being rude, use this to bring the the "Task Manager" (and kill it if you want). There is some other toys here too like, priorities you can set.
Search "Shortcut keys" under "HELP & SUPPORT" for a complete list of Shortcuts, including these.
for cmd
F7 - displays the history of the commands which have been used
Ctrl + Shift + ESC : Run Task Manager