I'm running an early 2008 iMac with a 17" Dell LCD rotated 90 degrees. It works perfectly on the Mac side, but I can't find any rotation controls in Windows. With some Googling around, I've determined that I need to install Catalyst in order to get this functionality. Unfortunately, Catalyst just tells me I don't have a supported graphics card (Mobility Radeon HD 2600). Any suggestions for how to get this monitor rotated or Catalyst installed? I've attached a picture of my setup. It's the display on the right that I'm trying to get sorted.