Apache virtual hosts

[Amailer]

Hello,
Could any one help me here?
Im trying to make it so that it will be easier to create subdomains with a php script that I can create later on, but first I need to know how to configure apache to create subdomains witht he names of the folders in X dir.

This is what I have currently.

code:

<VirtualHost 192.168.0.3> UseCanonicalName off VirtualDocumentRoot "C:/SUBDOMAINS/%1" ServerName *.gfx-pro.ath.cx ServerAlias www.*.gfx-pro.ath.cx </VirtualHost>

Now the problem here is that, since my site its self is a subdomain... creating I cannot use like %2.0+%3.0 or w/e to get sub.domain (cus then it would simply be gfx-pro.ath)

Either way, so Im using now whole names or just the first name like um
(in a dir subdomains, i have
compsci, php and etc). It works like that (http://compsci.gfx-pro.ath.cx and http://php.gfx-pro.ath.cx).

My problem is that i cannot go to www.compsci.gfx-pro.ath.cx because then i need to create a dir called www.compsci or soemthing-- a21938210 anyone can help


thanks
Basically, how do i create proper subdomains? with out needing to restart my apache?