Hi James
The five part series of 'Anzacs' can be purchased from the Austrlian War Memorial. Once in their website just clink on the link to their shop and then on 'videos' and Anzacs will come up.
http://www.awm.gov.au
Otherwise the company that released Anzacs is village roadshow and their website is
http://www.village.com.au
Cheers
Andrew Pittaway