As I heard, the video apps have gone 64bit only:
Q. Why did Adobe make the decision to support only 64-bit operating systems with Adobe Premiere Pro CS5 and After Effects CS5?Armed with maintenance for our labs here at FBE and FX3800 graphics cards, I am keen to see the proformance boost with Win7.64 for us in there. I am continually impressed with how Adobe continues to raise the bar and doing so without playing catchup with smaller outfits, they are the ones extending features and driving things forwards.
A. By optimizing code for 64-bit operating systems, Adobe is able to deliver the performance gains video professionals require. Creative Suite customers benefit from working on the latest hardware and operating systems, and the majority of video professionals have already transitioned to 64-bit capable systems, such as Mac OS X Leopard, Snow Leopard, or 64-bit versions of Windows (Vista, Windows 7). After optimizing and architecting three versions of Adobe Premiere Pro and After Effects software for 64-bit systems, Adobe Premiere Pro CS5 and After Effects CS5 now offer native support for 64-bit operating systems. Because 64-bit operating systems offer superior performance, CS5 and future releases of these products will not support 32-bit operating systems. For an up-to-date list of 64-bit 3rd party plug-ins for After Effects, visit http://www.adobe.com/products/plugins/aftereffects/.
Check out the video at http://cs5launch.adobe.com/.
Be prepared to be amazed!!