What OS are you using?
your localhost is just your base directory, and doesn't mean Oracle is overide you Web Server. Try creating a virtual directory and refering to it.
You can use your IIS manager to do this or or goto:
C:\Inetpub\wwwroot (or where you have set your webserver)
Create a folder begASP, right click folder, Properties, Web Sharing, Share This Folder and Name your virtual directory.
Place html or asp file as index or default and call the page
http://localhost/begASP and see if it runs
:)
TDA