c++ - linking errors after moving my class to "vc/include/" directory -

i having "unresolved external symbol" linking error simple class wrote along header file in vs 2008 using c++.

i moved class vs 2008's include directory, don't have copy files 1 project other every time creating new project.

i included header file in new project, file got included alright, can see list functions , data members inside object of class file, [ vs 2008 shows me list after type '.' ]

but not weird part, weird part is, files moved include directory works fine in original project in wrote them.

as including header file in new project, need add implementing cpp file, otherwise

"unresolved external symbol"

link errors.