... I downloaded the Camera Raw Updater 5.4 and the Camera Raw 4.6 converter and still cannot get Photoshop to open my RAW files......what am I doing wrong?
Two things:
1. Downloading the files is one thing. Installing them correctly is another. Did you actually install the Camera RAW Update v5.4? You should not install Camera RAW v4.6 when using Photoshop CS4. You need the newest of the version 5.x of Camera RAW. The newest is currently v5.4 although a "Release Candidate" of v5.5 is available.
2. All cameras are different. Most same RAW images in a proprietary format. The RAW converter you use must be newer than your camera. You should
always specify exactly what camera you are using when posting questions about reading RAW files. What camera are you using?