Has anyone installed 9i Form Demo?

I installed 9i Developer Suite. It works fine to connect another two server, 9i and 8i. Later, I installed 9i Form demo. It doesn't work. After clicking form demo icon, it suppose to be like http://computername(or localhost):8888/forms90demo/demo90.html, but it always show "this page can't be displayed". What parts did I miss?

One more question: I'm going to install 9iAS. Should I install it on server side or client side? If on server side, the home directory is "oraHome92", should I use anohter name? Same as on client side, I used "OraHome1" as 9iDS direcotory, how about using "OraHome2"?

Your help will be appreciated.