>Let's say I want to design an app. for dentists.
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>Let's say I want to be able to do some kind of graphical manipulation. For example if I want to be able to show which teeth received treatments.
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>So in the beginning for a new customer I would have a picture with all teeth white. After this patient's visit I want to be able to specify which teeth received treatments so that the next time that patient comes I can see what was done.
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>Anyway to do something like that with VFP?

It is definitely possible, but requires quite some experience with class design if you want to do it right. Do you build your classes mostly visually or in code?
The other question is the data binding, I suppose you have a table where you will create a row per tooth with some information about treatment.
I suppose the control in the end will make use of different images that would display the status of the tooth and the status is bound to the information stored in the table. Let me know what your ideas are so far then I can come up with an example.