Conclusion

In conclusion, we have created a simple PDF form, used it to submit data to a server side script with differing replies :

Through these examples we have been able to produce a data file that should meet the needs of most applications that use PDF Forms with FDF. Further information on the various components can be found below.

Resources

The current PDF Specification is available in electronic PDF or order it from Amazon in book format.
The FDF Toolkit and its reference and overview.
The Adobe Acrobat Javascript Guide, also available under the Help menu in Adobe Acrobat.
There is also an Introduction to Javascript & Adobe Acrobat available from the Adobe website.
For general support and queries the comp.lang.pdf newsgroup in UseNet is a good resource.
Additional resource highlights from the Adobe website include Implementation Notes and the Acrobat Developers FAQ.