In reply to Fraser:
Hmm, too good to be true.
I followed these instructions:
1. Exit Photoshop CS3 and Adobe Bridge.
2. Open My Computer.
3. Double-click Local Disk (C
.
4. Navigate to Program FilesCommon FilesAdobePlug-InsCS3File Formats.
5. Move the existing Camera Raw.8bi plug-in to another location (for example, a new folder on your
desktop). Ensure you keep this version in case you need to revert back.
6. Copy the Camera Raw plug-in, Camera Raw.8bi, from the download into the same folder as Step 4. 7. Launch Photoshop CS3 or Adobe Bridge.
... but got stumped at step 4 as there was no "File Formats" directory. I tried creating one and putting the .8bi file into that, but the ACR option is still greyed out when I launch Bridge.
Any suggestions / tips?