How to do file icon overlay

See more:

C#

I want to add different icon overlays over the icons of various files. (Note: not all the files of a certain type, just certain files).

If you don't get what I mean, I'm referring to what programs like TortoiseSVN, TortoiseHG, Dropbox, etc.

Can this be done in .NET? If so, how?

I'm hoping there's a library out there for this. I found this CodeProject article about something like this, but it's not .NET.

If any body knows, please let me know.