Does Photoshop CS4 support ATY RadeonX1600 plus Apple Cinema 32" display (18 pin connector)

Question

SEE SCREEN SHOT OF ALL THREE RENDERINGS IN ORDER:  PHOTOSHOP CS4, LIGHTROOM2, BRIDGE. 
Have been getting very harsh/hot renderings of images in PS CS4.  Bridge, Lightroom 2 and even Nikon's Capture NX2 are all quite similar in rendering image.  Have used DNG created from Raw Nikon NEF.  Rendering in PS CS4 significantly different on Cinema display, even though the RGB levels read the same in Brdige and Photoshop.  The Cinema display is the older 32" that has the larger DVI link and is a matte screen as opposed to the new one released by Apple that has the mini-dvi link and is a glossy screen.  The rendering in ACR 5.5 that is brought up by Bridge looks fine, then when opening it in Photoshop it becomes very yellow/red and blows up the highlights - approximately like adding +50 to vibrance.
Driver problem???????????  All software is current, Mac OS/X 10.5.8, PS 11.0.1, ACR 5.5.0.97
Found a thread about driver problems but not this problem nor this configuration was confirmed.  Have turned off GL as per that thread anyway.
Hardware Overview:
  Model Name: MacBook Pro 15"
  Model Identifier: MacBookPro2,2
  Processor Name: Intel Core 2 Duo
  Processor Speed: 2.33 GHz
  Number Of Processors: 1
  Total Number Of Cores: 2
  L2 Cache: 4 MB
  Memory: 3 GB
  Bus Speed: 667 MHz
  Boot ROM Version: MBP22.00A5.B07
  SMC Version (system): 1.12f5
  Serial Number (system): W87060H4W0L
  Hardware UUID: 00000000-0000-1000-8000-0017F2D2364B
  Sudden Motion Sensor:
  State: Enabled
ATI Radeon X1600:
  Chipset Model: ATY,RadeonX1600
  Type: Display
  Bus: PCIe
  PCIe Lane Width: x16
  VRAM (Total): 256 MB
  Vendor: ATI (0x1002)
  Device ID: 0x71c5
  Revision ID: 0x0000
  ROM Revision: 113-xxxxxx-158
  EFI Driver Version: 01.00.158
  Displays:
Color LCD:
  Resolution: 1440 x 900
  Depth: 32-Bit Color
  Core Image: Hardware Accelerated
  Main Display: Yes
  Mirror: Off
  Online: Yes
  Quartz Extreme: Supported
  Built-In: Yes
Cinema HD:
  Resolution: 1920 x 1200
  Depth: 32-Bit Color
  Core Image: Hardware Accelerated
  Mirror: Off
  Online: Yes
  Quartz Extreme: Supported
  Rotation: Supported

Answer 1

I am adding this:  when looking at the screen shot on my Cinema Display, the Photoshop rendering does not show the harsh yellows/reds that I see when looking directly at the image, Prophoto RGB 16bpc.  The screen shot of the three renderings of the same image look far more similar than in real life here.  I see the screen shot is only 8 bpc, and have opened it with its own color profile (PNG) and also converting it to the working profile of Prophoto RGB.