[Hampshire] multiple sites in Apache

Hi Guy's,
I am trying to get my head around creating multiple sites in Apache, so that
I can configure each one of them to be http://an_ip_adress/site1 and
http://the_sames_ip_adress/site2

I think this can be done via virtual hosts, but I can't work out how to
configure it for the above scenario.

Any ideas?

Richard Mace