I haven't tried XP yet, but in Vista, you only need the codec. All I did was visit the link below and then install the RAW Codec. It told me I needed to reboot, but I did not. After installation .CR2 files show as thumbnails in explorer just like .JPG files.
http://www.usa.canon.com …er?act=OPDSupportVistaAct![]()
Once I have an XP system going again I'll try out the codec for XP, but if it is anything like Vista, third party apps are unnecessary.


