Windows Explorer Folder Icons

[Benjamin]

I know we can right click on a folder and change its icon, but the default icons use 2 - one for closed folder and one for opened folder. I think that it is in theregistry somewhere. I was not able to find any information on both states using the desktop.ini. Can anyone tell me how to change the default folder icons to represent the 2 folder states, and even change the drive icons? Thanks

[Anywhere]

I think that the icons can be found in the below file:

%SystemRoot%\system32\SHELL32.dll

where %SystemRoot% is the same place where Windows is installed in C:\Windows. So to change the icon for a folder, right click on the folder and choose properties from the context menu and then select the Customize Tab.

[Reegan]

I just found some code project program that does this, but it is written in C++ and I havent compiled it yet fully. But, where do people find the registry class breakdown or definitions? Where exactly can I find in the registry to do it manually?