Forum: Mongrel More mongrel questions

I would like to confirm my understanding of something and then ask a 
question.
Mongrel runs behind an HTTP server. It interacts between the http server 
and the ruby interpreter.
Question: Where does the mongrel server begin serving requests? In other 
words, what is the comparable beginning point of index.html? If it is 
variable, where do I find this setting in my configurations of mongrel?
James