You already must have tried to manually copy everything to the correct Adobe folder, but my suggestion is that you double check your work, since the process is arcane.
First, the 4 prm files go to:
D:\Program Files (x86)\Adobe\Adobe Premiere Pro CS4\Plug-ins\en_US\Blackmagic Design
If any BMD prm files, with different names, are there from a previous BMD installation, delete them.
The Blackmagic Editing Mode.xml file goes here:
D:\Program Files (x86)\Adobe\Adobe Premiere Pro CS4\Settings\Editing Modes
Then merge the Encoder Presets and Sequence Presets folder with the existing Adobe versions. If you are prompted to overwrite files with newer versions, say "yes".
The folder at:
C:\Program Files (x86)\Blackmagic Design\Blackmagic Intensity\Premiere Support\4.0\MediaIO\systempresets
also has to be copied to its identical Adobe location.
Now, if you've done all that (EEEK!), it should work. Someone should either write a script to do this, or inform BMD about this problem, since every time you update the BMD drivers, you have to go through this whole routine again.