Hi,
I am wondering if it is possible to alter dns to point subdomains at IP's not just redirect them to websites.

Also coppermine asks for a path to ImageMagick. Is there a definite way I can find out the path to ImageMagick and it's convert utility?

Lastly I was wondering if it would be possible for me to setup a cron job to mail me my bandwidth usage each day, but not sure the command is used to check bandwidth?

When a subdomain points to a website, it is pointing to an IP.

You can use the 'locate' command (read: updatedb) to search for binaries that might be installed on your system.

Yes, if you're familar with crontab it is possible to set up a cron job to mail bandwidth usage every 24 hours.