Jawin and JNLP

Hi,

I've been tasked to get a URL in one application to launch a totally
different application.  Citrix is involved, so there's not a simple
solution to the problem.  What I'm trying to do is to have the URL point
to a servlet which creates a .jnlp file that launched a Jawin Java app
that can then launch the required application.  I've got the servlet
creating the .jnlp and successfully downloading the Java app.
Separately I have the Java app starting the other application, but when
run from JNLP it doesn't work.

I have included the jawin.jar file in the .jar that the JNLP downloads.
I'm thinking that it's not finding the .dll even though I have it
installed on the machine that I'm running it on.  Or that there's
something intrinsic to web start that prevents JNI stuff from working.

Can anybody on the list give me a clue on how to trouble-shoot this?
Has anybody used Jawin via a JNLP before?  My app is supposed to pop up
a swing window, but it's not getting that far, so I can't figure out how
to get any exceptions this thing may be throwing to post here.

Thanks for your help,
Mike