I have a question about RAW images

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Hi I'm new to this forum, and relatively new to digital photography. I have recently taken some amazing shots of a sunrise and they are in RAW format. I was playing around with the camera (a Canon G3) and forgot to change it back.

I managed to download them to my computer but they downloaded as .thm files and now I cant convert them. They were downloaded via my printer dock for the compact flash card, not the Canon's direct cable link up to the camera/computer. I am hoping someone here may have a solution. My software for the Canon wont convert now that they have downloaded as .thm files.

Thanks Wendy