Start point of squid configuration

[Stefano Mason <stefano.mason@xxxxxxxxxxxx>]

I read every single parameters like cache_mem, cache_dir but this remain 
a single information that doesn't supply a complete vision.

Someone know if exist a useful schema to configure squid like this term:

[Attention following are guess informations only to explain what I mean]

# USERS	MEMORY	CPU	cache_mem	cache_dir
100	500M	>1GHz	32M		2G
200	1G	>1GHz	32M		4G
..
..
1000	4G	>2GHz	128M		10G

Best regards.
Stefano