Ok, I tried just copying the .b4xlib file to the AdditionalLibraries folder where the poi and other libraries are.
I think everything's ok. The Example.zip doesn't finish compiling, because it's looking for something in the C:\PERSON~2\B4J\Share Files\ folder, which it can't find.
I tried searching for PERSON in the project, but the quick search box doesn't seem to accept any string. <Ctrl-F> opens the Quick Search box, but it doesn't accept any input.
Anyway, I should be able to tweak this to work with my spreadsheet, thanks.