Where do I create a website for a client?

[Doomster]

Stupid question. I did it before a few days ago.

I created a website for a customer somehow and it created a directory in the /var/www directory.

I now created another client and forgot how to create the website. There is no new entry in the /var/www directory. How do I create a website so that it creates a directory/entry in the /var/www directory?

Thanx.