I have been using an old copy of BreezeBrowser through wine for a while, but I don't think new versions work anymore.
I bought a new Canon recently, and have played with IRFanview for a bit. Likewise, ufraw works. It's a pain though. Wikipedia has a bunch of links under "raw" or "raw images"...
Good luck!
trying going to
canon raw
What OS you use?
I have been using an old
Try UFRaw (there's a plugin