Locomotive/lighttpd config questions

I've got a couple of configuration questions about using lighttpd under Locomotive:

  * (how) can I cause lighttpd to run each Rails page      request as a separate process? It seems like this      should be possible, using dispatch.cgi, but I don't      know how to get that to run.

  * Assuming that I have a looong-running Rails app,      (how) can I raise the lighttpd timeout to some      ridiculous value? I'm getting erratic, timing-      dependent "500 - Internal Server Error" messages      and I'd like them to go away.