How to edit Build system paths in Visual Studio 2005

[Pragadheesh]

Hi,

I want to change the build system path for building my VC++ project in VS2005.
When I try to build the project, I'm getting an error that a specified header file cannot be opened. I have that header file in "Microsoft SDKs\Windows\v7.0\Include".
But the path present in 'Build system path' is "Microsoft SDKs\Windows\v7.0\Include" which i found in the Error dialog box when i tried to open that header file through the code.
So I want to change the path in build system path to "Microsoft SDKs\Windows\v7.0\Include".
How can i do this.? How to open Build system paths in VS2005.?