Any one who is expert in Microsoft Platform Builder? I need your help please. I am having the source files and header fils. Can anyone tell me how to build the platform based on these source files and header files? Thanks!

I am currently using Microsoft Visual C++ 6.0, and having problem with this tool. When I create a new dialog based project, let's say with the name of edits, there will be 3 classes listed in the class view pane, that are: CAboutDlg, CEditsApp and CEditsDlg. When i add a new handler for a button, either by double clicking the button or through MFC ClassWizard, the classes listed in the class view pane will dissapeared. Sometimes one missing, sometimes two or all. i have to to delete the .ncb and .opt file in the folder where the source code is saved, in order to "get back" all the classes listed previously. Does anyone know what is the problem actually? How to solve it? Thanks and regards, Eowyn