Problems with ALL_BUILD (error with vs2010)

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HI! I'm new to OpenCV .. I installed OpenCV 2.4.3 on Windows 7 with Visual Studio 2010 Express from this guide: http://docs.opencv.org/doc/tutorials/introduction/windows_install/windows_install.html

And everything went ok up to step 7. Here when I open the solution 'OpenCV' and I try to debug it, I get this error:

Unable to start program C:\Users\Cristina\Desktop\OpenCV\Progetti\Debug\ALL_BUILD Cannot find the specified file

The ALL_BUILD program is in: C:\Users\Cristina\Desktop\OpenCV\Progetti, so I copied it in C:\Users\Cristina\Desktop\OpenCV\Progetti\Debug, but I still get the same error.

Can someone help me??

Thanks in advance