CNAME question

I have a question about setting up a vhost to pick up the sub-domains.

I do have this working, but it will only work on the domain that the IP in the virtual host is pointing to.

For example, I set up http://www.newz.org.uk and it all worked fine. For the domain, I put in the following dns info:

CNAME
*.newz
newz.org.uk

That worked great, but when I did the same with indie-film.info, it would go through the signup process fine, but when I clicked on the link in the email, it would go to the newz.org.uk site.

I admit, I know little about DNS, and only got to that CNAME info by looking through Google and guessing (my style of discovery).

Can anybody tell me what I should actually do and what settings to have?

I'm using Plesk control panel.

Thanks,

Joe