TortoiseCVS
TortoiseCVS lets you work with files under CVS version control directly from Windows Explorer. It's freely available under the GPL.
With TortoiseCVS you can directly check out modules, update, commit and see differences by right clicking on files and folders within Explorer. You can see the state of a file with overlays on top of the normal icons within Explorer.
OnEarth magazine: how to clean coal
http://www.nrdc.org/onearth/05fal/coal1.asp - How to Clean Coal
I decided to take an exploratory journey down that pathway, in effect following coal's carbon trail from cradle to grave. That's what took me to the Freedom Mine near Beulah, North Dakota. The mine serves as the fuel source for a sprawling complex that includes two large coal-based energy plants: the Dakota Gasification Company's Great Plains Synfuels Plant, which gasifies coal to produce a form of natural gas, and the Antelope Valley Station, a 900-MW traditional coal-fired plant.