Help Required Regarding Hosting

I have a query regarding hosting using asp.net sandbox 4.5 account.

My demo site structure is like the following

/root -- (Virtual Directory provided by discountasp.net for hosting)
|
|__ /Admin
|__ /Client
|__ /Demo

I have three different web applications in solution for admin, client and demo, and correspondingly three seperate virtual directories in local IIS.

To host my application on discount asp.net server, do I need to configure three virtual directories?

Please suggest me a way to create/configure a virtual directory on discount asp.net server using sandbox account.

Regards,

ErSehmi