I've been through almost all of the tomcat-user archives, faqs and documentation, but still I can not make a simple JNI call from a JSP. The problem, as I found in most of the archives is an java.lang.UnsatisfiedLinkError exception. Here are some details. 1. Windows 2000, JDK1.3.1, Tomcat 3.2.1 2. The library is in the WinNT folder (which is in the PATH env var) 3. The library works perfectly from a standalone Java app 4. The library is loading correctly (from the JSP). It can not be deleted once loaded, and no errors are reported upon loading thus I assume the library is loaded. 5. Once a call is made to the library, an java.lang.UnsatisfiedLinkError is generated. 6. The library is in a path specified in the java.library.path Archived articles suggest the function prototype/signature in the lirbary (DLL) does not match the class file. This is simply not so as it works perfectly from a standalone Java app, without moving/recompiling any files. Any suggestions would be warmly welcomed. Regards -- Brian _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.