http://www.etopping.com/ie/screenshot/ - IE plug in - get the page copied to the clipboard and insert it to any graphic program or to save the screenshot to Windows Bitmap graphic file.
Linux tools:
http://khtml2png.sourceforge.net/ Welcome to khtml2png - khtml2png is a command line program to create screenshots of webpages. It uses libkhtml (the library that is used in the KDE webbrowser Konqueror) and "convert" from the ImageMagick?Create|Search graphic conversion toolkit (only in khtml2png 2.x).
http://www.developerfusion.co.uk/show/4712/ - Generate an image of a web page - Incomplete article, depends on interfaces from pinvoke.net, but that site has a lot of errors.