That page says that they use CO for onward connections. There is no FF partnership in place that would allow you to earn CO miles for a Virgin Australia flight.

Interestingly, if you go through the navigation on their website to partner airlines, this is the page you get (which doesn't include CO):

http://www.vaustralia.com.au/destina...ines/index.htm

http://www.vaustralia.com.au/destina...ines/index.htm