[FileUpload] Installing in Eclipse

[Rhino]

Can anyone tell me how/where to install FileUpload so that it works in Eclipse?   I am running Eclipse on Windows XP and have Tomcat 4.1.24 and Sysdeo V2.1 installed on my system. Every time I run my simple file upload servlet, I get this (plus more stacktrace) as the root cause in the exception that is thrown:   java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileUploadBase I posted about this a few days ago and tried everything that was suggested without success. The last suggestion that I got said that I may have installed the FileUpload code incorrectly. As a result, I downloaded and installed the new 2.1.1 version of Eclipse, migrated my projects over to the new version of Eclipse, then tried my servlet again. I got the same error again!   I'm pretty bad at installing things so I've probably just done something boneheaded that is obvious to everyone but me. That's why I'm posting here; maybe one of you folks can see what I'm doing wrong.   My newest version of Eclipse is installed at D:\eclipse. The version of Tomcat used by this new copy of Eclipse is at D:\jakarta-tomcat-4.1.24. My CATALINA_HOME environment variable has been changed to point to D:\jakarta-tomcat-4.1.24. The commons-fileupload-1.0.jar file is at D:\jakarta-tomcat-4.1.24\common\lib.   What do I have to do or change to make this work? I can compile fine but I can't run this servlet at all, not even once.   This feels like a dumb question but I've been looking at docs for quite a while now and still can't find this answered clearly anywhere. Rhino --- rhino1 AT sympatico DOT ca "If you want the best seat in the house, you'll have to move the cat."