For reference, I have figured out that you can type in icon type and simply enter the file extension without the '.' or a '*.' in front of it. Just the file extension. Worked for RDP icons. I assume this will work for others as well. I didn't find anything on this and was confused. Hope this helps someone else. Cheers!
I can't believe I did not see anything documentation or threads on this as it seems to be a no brainer. Cheers all!
-Q
