Copying the Screen
Key Description
Prt Scn Copies the whole screen to the clipboard as a graphic. Use MS Paint to paste the image.
Depending on Prt Scn key settings on the Misc tab of a Dos program's properties, a Dos program can still print to printer with Prt Scn key.
Alt + Prt Scn Copies the active window to the clipboard as a graphic.
To capture a screen from a DVD or other hardware type playback, disable Overlays in Media Player's Tools menu - Options - Performance - Advanced. Media Player has its own similar feature for DVDs only (Ctrl + I) but is usually not available due to computer hardware issues and also content protection issues.
If sending the screenshot by email save it as a jpeg, gif, or png file before sending (in MS Paint, File - Save As then choose a format in Save As Type).
Run MS Paint
Message Boxes and Error Dialogs
Key Description
Ctrl + C Copies the text of a message box to the clipboard.
Alt + D Shows details in an error dialog. This was introduced in Windows ME and superceded in Windows XP.
In most property sheets text can be selected and copied even though it doesn't look like it can. In most windows applications right clicking the text field will popup the edit context menu. However in office there is no menu, office believe the What's This help feature is more important, and one must press Ctrl + C.