It installed OK, and I gave it the "-ignorepixeldepth" switch. Now it's complaining of wrong pixel formats:
INFO Initializing window...
INFO Running at 1024x768x32 @ 60
WARNING No ARB WGL render texture extensions
INFO No 32 bit z-buffer, trying 24 bits instead
INFO Choosing pixel formats: 6 pixel formats returned
INFO Swap Method: Unknown
err
pengl:X11DRV_DescribePixelFormat Wrong pixel format !INFO resetDisplayResolution START
INFO resetDisplayResolution END
WARNING LLWindowManager::create() : Error creating window.
WARNING Unable to create window, be sure screen is set at 32-bit color in Control Panels->Display->Settings
It would be so much better for a native client to be released...