You could always buy this machine,should do the trick or you could hire one for the day ;)
http://cgi.ebay.com.au/Wagner-HC940-Heavy-Coat-Airless-Spray-Unit-/260621348633?cmd=ViewItem&pt=AU_Building_Materials&hash=item3cae3e2f19
or you could buy this machine,its retail is around $3500,wont...