Hey this looks like my tutorial. :-)
You need to allow reading of /dev/input/eventXX files. For 2.4-kernels only USB-devices make a event-file. I am not used to Fedora (nor mandrake) but I am sure you can create those files with mknod and then it should work (see kernel documentation input/input.txt for information about the event files).
Ultimately I advise using a 2.6-kernel because you get mouse and keyboard support there, too.
@chlafaille: /dev/input/jsXX files are not used by the plugins (I guess this for endolf's linux plugin, mine doesn't thats for sure