Backup And Restore Extension Icons?

Alright, well everybody knows that you can open any folder, select Tools > folder options, select the File Types tab, select the desired extension, select advanced, and edit the icon accordingly. This will change the icon that will appear for any extension that is know to your system.My question is where is this information saved? Whenever you change these icons and hit apply, is there a certain system/text file that is edited to show the directory of the icon source and what extension it applies to? For instance, when you change the icon of a folder a desktop.ini hidden file is saved within the folder that has the directory of the icon. Is there some sort of "master database" text file that has all of this information?

I ask because I want to be able to backup the (extension icon) information and copy it onto any computer system which will in turn instantly change all of my extension icons to my liking. Of course, I would have to copy over my icons to the appropriate directory before doing so but that would not be a problem for me seeing how I have them all saved and organized into a single folder. Again comparing to the folder desktop.ini concept, you can simply copy and paste the desktop.ini file into any folder and the folder's icon/appearance will instantly change to w/e the file says. I want to accomplish this but for the extension icons and all at the same time!