Two CI's on One Domain

[eluser]Bl4cKWid0w[/eluser]
I have an installation of code igniter in the root directory of my web domain. I would like to develop another site of mine under the same domain, but when I visit the second installation of CI in another directory of the domain, it just displays the main page of the first installation. How would I have two installations on the same domain?

I am assuming that the system is reading the directory in the url as a class in the first install?

mysite.com/secondinstall