Ruby, PDF

Heya all -- I'm looking for a little help. I need to be able to take data entered from a website form and propagate form fields in a PDF. As far as i can tell, the only solution to do this is using the Java-based iText and the Ruby/Java Bridge. I'm trying to install the rjb gem in my own gem directory, but it doesn't want to install. I get the error:

checking for jni.h... no
checking for ruby/dl.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.

Has anyone out there had any luck with this combo? Thanks in advance for any help!

-Lucas

Are you sure that it will be done with Java only, we have done it with PHP and it works great!

Custom PHP Programming

Really? I'm super curious how you went about it. Did you use a package, or roll your own? Thanks for any help!

-Lucas