Josh, if you're working with .jsp and .tld files, then you really shouldn't be doing this as a "Java Project", but instead a "Dynamic Web Project" in Eclipse. Nonetheless, I'll try to answer your question.
Based on the diagram of your file system, your files are laid out incorrectly. If you're trying to create a web app (a .war file), then you need a WEB-INF directory. Under the WEB-INF directory you'll need a web.xml file (google for web.xml to see what needs to be in there), a tags directory, and a classes and lib directory.
Compiled class files must go in the WEB-INF/classes directory.
Jar files that you depend on must go in the WEB-INF/lib directory.
Tablibs must go in the WEB-INF/tags directory.
Finally, your .jsp files must go in src directory (the parent dir of WEB-INF).
So, your layout should look like this:
myproject/
`-- src
|-- WEB-INF
| |-- classes
| | `-- MyClass.class
| |-- lib
| | `-- my.jar
| |-- tags
| | `-- my.tld
| `-- web.xml
`-- include.jsp
Hope this helps.
-Bryan