The charts you are referring to are the Gantt charts. Many project planning systems include the ability to generate those charts in order to track the time line of the project.
Personally speaking I do not know of a native
PostNuke module that performs project tracking and produces the Gantt charts.
There was a reference to the tie in one of the
PostNuke developers made which allows the same user base to access both
PostNuke and a system called phProjekt. You can find out more about phProjekt itself by visiting the site of http://sourceforge.net/projects/phprojekt/
I realize this may be a bit more than what you are seeking, but again, I do not know of any project module native to
PostNuke which generates the Gnatt charts. The phProjekt system is a full blown project management system that also has elements of groupware incorporated into it. This is not saying anything bad about the package, it is a current trend in the project management arena to broaden the packages to include elements of groupware to permit group collaboration.
Personally I am looking into a package called eGroupWare to handle my project management needs. I think it had its origins as groupware and included at some point project management. Things seem to flow more readily within this package. By that I mean it has something called global categories, which is the type of thing I was looking for. You set a category up at the global level and then it is available for all modules such as the project management area, the forums, the file manager area, etc. Not knocking phProjet, but it doesn’t have this concept built into it so categories are set at the individual module level as far as I could tell when I was working with it.
I do see the benefits of having a project management module native to
PostNuke, one that would generate the Gantt charts, and I may seek to file a formal project request to work on this once I get another module that I have already sought approval on.
Hope this helps explain things and if you have questions about what I have said just ask me and I'll try to clarify.