Packaging dll files in java application

Hi all,
I am working on an application where I use some dll files from my java application. Now I would like to package the application so that end users can easily install and use them. the Java application is currently packaged as a jar file. How to i package the dll files? Where should I copy these files to on a target system.
I tried packaging my application and installing it. But I get the following error: "Exception in thread "main" java.lang.UnsatisfiedLinkError". How do I resolve this error.
Thanks for advance,
Abdel

Make sure that the dll files is in the library path.
VM option example:
-Djava.library.path=.\dll

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