How Bypass Downloading Process from Virtualmin and Stored All Script to my own Dedicated Server

Everytime I want to install script from Virtualmin, like Wordpress, It must downloading the script from Virtualmin’s site like showed below. How can I bypass this downloading process and stored all the script to server like Fantastico does.
Downloading http://scripts.virtualmin.com:80/wordpress-2.9.2.zip (2.40 MB) …
Received 1024 bytes (0 %)
Received 246 kB (10 %)
Received 492 kB (20 %)
Received 738 kB (30 %)
Received 983 kB (40 %)
Received 1.20 MB (50 %)