Exif Metadata can only be viewed in Bridge. I know Bridge comes with the Creative Suites package but I don't know if it comes with the stand alone version of Photoshop.
What I was refering to about the RAW images was that when you open a RAW image in Photoshop you get a large pop up that lets you manipulate camera settings such as color temp and exposure. After you have completed your image adjustments and open the RAW file, you know can save it as a jpg/tif with the exif metadata of the changes you made inbedded in the file. This means that is you view the created jpg in Bridge it will refelect the metadata that you set in PS. I hope this makes sense. It basically boils down to, you need Bridge to view the metadata.