IMac 2011 getting BSOD in Bootcamp

Hello all.
I installed Bootcamp on my new iMac (2011) and installed Windows 7 SP1. I downloaded the iMac drivers to a CD via Bootcamp, and installed this.
When I run Dawn of War 2 in Windows, I get the dreaded blue screen error with a "atikmpag.sys" error.
Now, I get that this has something to do with the Apple-drivers and the ATI-graphics, but what can I do about it?
I tried installing the ATI drivers from their web-site, but it says that my card is not supported.
How do I replace the Apple-drivers in Windows 7 with, say, ATI's own driver?
Thanks in advance.

It is an ATI driver, this is the info from Display Adapters under Device Manager:
Driver Provider: ATI Technologies Inc.
Driver Date: 07-07-2011
Driver Version: 8.872.0.0
Digital Signer: Microsoft Windows Hardware Compatibility Publisher
However, I did not download it from the ATI site. If I go to the ATI site and download the driver from there (after entering my hardware and OS info) it wont install. Says I don't have the proper hardware.
Instead, I downloaded the driver from here: http://www.hardwareheaven.com/mobility-radeon-drivers-support/206549-ati-mobilit y-catalyst-11-7-display-drivers-notebooks-27-07-2011-a.html
However, the issue is BACK! I played through several (10+) levels in DoW2 without any issues and exceptional performance, but then the game started freezing for several seconds, the screen turned either black or gray, and then the game went on - but just had a blue screen again.
Sorting the driver was my last idea, I am fresh out now.

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    com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0
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    com.apple.driver.IOPlatformPluginLegacy          1.0.0
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    com.apple.driver.AppleHDAController          2.3.1f2
    com.apple.iokit.IOHDAFamily          2.3.1f2
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    com.apple.iokit.IOAcceleratorFamily          19.0.26
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    com.apple.driver.IOPlatformPluginFamily          5.2.0d16
    com.apple.driver.AppleThunderboltEDMSink          1.1.8
    com.apple.driver.AppleThunderboltEDMSource          1.1.8
    com.apple.driver.AppleSMBusController          1.0.10d0
    com.apple.kext.AMD6000Controller          8.0.0
    com.apple.kext.AMDSupport          8.0.0
    com.apple.iokit.IONDRVSupport          2.3.5
    com.apple.iokit.IOGraphicsFamily          2.3.5
    com.apple.driver.AppleUSBHIDKeyboard          165.5
    com.apple.driver.AppleHIDKeyboard          165.5
    com.apple.driver.AppleThunderboltDPOutAdapter          1.8.5
    com.apple.driver.AppleThunderboltDPInAdapter          1.8.5
    com.apple.driver.AppleThunderboltDPAdapterFamily          1.8.5
    com.apple.driver.AppleThunderboltPCIDownAdapter          1.2.5
    com.apple.iokit.IOUSBHIDDriver          5.2.5
    com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.1
    com.apple.iokit.IOUSBMassStorageClass          3.5.0
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    com.apple.iokit.IOFireWireSBP2          4.2.0
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    com.apple.iokit.IODVDStorageFamily          1.7.1
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    com.apple.driver.AppleUSBMergeNub          5.2.5
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    com.apple.iokit.IOAHCISerialATAPI          2.5.0
    com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.1
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    com.apple.iokit.IOThunderboltFamily          2.1.1
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    com.apple.iokit.IOEthernetAVBController          1.0.2b1
    com.apple.iokit.IONetworkingFamily          3.0
    com.apple.iokit.IOFireWireFamily          4.5.5
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    com.apple.iokit.IOHIDFamily          1.8.0
    com.apple.iokit.IOSMBusFamily          1.1
    com.apple.security.sandbox          220
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    com.apple.security.TMSafetyNet          7
    com.apple.driver.DiskImages          344
    com.apple.iokit.IOStorageFamily          1.8
    com.apple.driver.AppleKeyStore          28.21
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    0xffffff838aeb3d20 : 0xffffff800dc6a8f0
    0xffffff838aeb3d50 : 0xffffff800dc653ef
    0xffffff838aeb3d80 : 0xffffff800e002333
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    BSD process name corresponding to current thread: Pages

    Welcome to the Apple Support Communities
    gstahl wrote:
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    Download the latest Soundflower

  • I'm a long time PC user and just bought a 64 bit iMac and want to use BootCamp to play old PC games.  Can I install Win XP or if it needs Win 7 can it be a 32 bit version, and how do I do it?

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    Once you get windoze up an running on your new iMac, see these:
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    Anatomy of a Mac,
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  • What do I need to install win7 in my iMac 2011 21.5"  ,and how much do I need?

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    Thank you for using Apple Support Communities.
    Regards,
    Sterling

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