merlyn,
Despite the advisory that it CAM::PDF might make formatting a problem, it is the only module I could figure out how to make work. Here is the most basic example: 
#!/usr/bin/perl
use strict;
use warnings;
use CAM::PDF;

my $pdf = CAM::PDF->new('fw9.pdf') or die 'wtf';
# Use $pdf->getFormFieldList() to get list of field names
# Unfortunately, fw9.pdf doesn't have descriptive names

$pdf->fillFormFields('f1-1' => 'Randal Schwartz');
$pdf->cleanoutput('RSchwartz_w9.pdf');

[download]
As noted elsewhere in this thread, if all you are modifying is field values than the listpdffields.pl and fillpdffields.pl utilities that come with CAM::PDF may come in handy.

Note: I did have some troubles installing the module and its dependencies but assume it was due to local environment. Let me know if you have problems so I can share workarounds.

Cheers - L~R

In reply to Re: Filling out PDF forms with data from DBI? by Limbic~Region
in thread Filling out PDF forms with data from DBI? by merlyn

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