Fckeditor not working in lighttpd

Hi there
We arethinking about switching from apache to lighttpd, but we are
having problem with the fckeditor…
it was working normally in apache and in webrick…
but not now, it does not show up
I followed the site :
http://www.joshuamcharles.com/rails/fckeditor.html
So it might be a configuration thing in lighttpd
any help is very apreciate it

jorge mario