Update2:
Well I tried another build from (build June 20th, 2009) and not only does it have more features, including a on camera conversion to dng, and I am able to open them in raw therapee.
Sorry for the beginners questions, I just thought I'd post this to help anyone else who may benefit.
If anyone can offer any suggestions about what canon settings work best with raw images (size, scene selection, etc... ) it would be appreciated. For now, I am just going to experiment.