Carlos,
Here's the best routine I've seen to generate graphs programatically with MSGraph from VFP: http://www.michaelchaney.com/articles/graphing.php3

You might also look at the free Office Web Components(OWC). It's multi-threaded and very efficient. Despite the name, you can use this from any desktop VFP application very easily. I would say that this tool is as good as most 3rd party tools you could buy for graphing, especially for the basic stuff. The free download is at:
http://www.auburn.edu/~brainsf/components.htm
>Hi everyone!
>It is possible to make graphics programmaticaly with no wizards. The final idea is to show statistics graphics in an application. Any idea?.
>Thanks in advance
>C.B.