How to make alias point to external hardrive folder

How to make virtual host/Alias in apache pointing to external hardrive(Keepting root directory working)?

Hi all could any one tell me how to make Virtual Host/Alias pointing to external hardrive
in my Apache/1.3.33 (Win32) server. ( I don't want to put all the content into default root directory).

This is exactly what i want .Suppose my default root directory is "C:\MyServer\htdocs", and the new root is "E:\music".
Basically i want only the urls that link to the virtual host will use the "E:\music" root directory, and all the others (on port 80) will still link to the default root directory.

Hope you guys help me achive this task.Thanks