Include DLL path in VS2010

1. Go to project properties (Alt+F7)

2. Under Debugging, look to the right

3. There's an Environment field.

4. Add your relative path there (relative to vcproj folder) i.e. ..\some-framework\lib by appending PATH=%PATH%;$(ProjectDir)\some-framework\lib or prepending to the path PATH=C:\some-framework\lib;%PATH%
5. Hit F5 (debug) again and it should work.

ref:
http://stackoverflow.com/questions/2119539/visual-studio-how-to-set-path-to-dll