well im not 100% sure about cs4, but im using cs5 and they brought out an update so you can edit raw,have a search on google, (AdobeCameraRaw-6.7-mul-AdobeUpdate)as i said that's for cs5 and works a treat (might work might not also Microsoft do a a codec pack now that lets you view your raw files,search for MicrosoftCodecPack_amd64 and you should be good to go.hope it helpsor if all else fails use lightroom 4 lol great program im just getting to grips with
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