Hello, go to this page: http://www.microsoft.com/technet/sys...***plorer.mspx and download procexp.

Run the program, go to view and select 'view lower pane' and choose the 'view dlls' option.

In the top pane, select explorer.exe and all the dlls being used within explorer will be shown in the lower pane.

It will probably take a while, but work through the list in the bottom pane until you find one that is running in relation to one of the programs you use.

When you think that you have found it, take note of the name, right click and choose either properties and look through them, or search online which should tell you what program uses it.

Also, you can use resource hacker which is a handy freeware tool. It will allow you to view the icons being used by any dll.

There are several places where you can find it e.g.
:Resource Hacker

If you need any help with using either program, let me know

Regards

Martin