Thumbnail viewer for .raw files

Can anyone suggest a program for viewing thumbnail images of .raw files?

These images are a mix from a Canon D-60 and a D-30.

TIA

Hi

This is fromgoogle:

http://www.breezesys.com/BreezeBrows...ezeBrowser.htm

Thanks TJ, I should have looked at what I had a little more. I've figured out that Irfanview will do it.