Most of the 'standard' icons are in shell32.dll. You can see these by using the
'Change Icon' feature.
Right click any desktop icon and select 'properties' then 'Change Icon'.
Select 'Browse' then navigate to '\winnt\system32\shell32.dll' and click 'OK'.
This works for any file containing embedded icons. If the file doesn't contain
any icons you'll get an error msg.
Just be careful when doing this or you might find yourself changing icons when
you don't want to