The name of the compiled Microsoft HTML Help file (.CHM) is based on the name of your project file (.MPJ). You can assign different names if necessary.
Open the project.
From the File menu, select Project Settings.
Click the Compile tab.
In Compiled File, enter the name of the .CHM file you want to create.
Click Generate
Primary Target on the toolbar. (Use this option
only if you have Microsoft HTML Help set as your primary target.) The .CHM
will use the new name.