How to Automagically Download DVD iso

[Robert L Cochran <cochranb@xxxxxxxxxxxxx>]

Here's a dumb question. I want a way for my machine to check for, and 
automatically download if found, the DVD iso for Fedora Core 4 (test) 
when that is released to mirrors. Perhaps it could check every 3 hours 
after a certain date, say the 20th. Any ideas for how to make that happen?

Thanks

Bob Cochran