not sure where to get em from, but for the way i process em, u'll need
1) Canon ZoomBrowser EX
2) Raw Image Task
These two programs were supplied with my 40D.
Zoombrowser to browse the photos (no matter the format) and Raw Image Task to edit the RAW Files and save to TIFFs
hmm also, for windows to reckonize RAW files, i think theres a CR2 patch thingo for windows avaliable on the canon site