Here are some sites to choose from.
www.hallmarkcards.com.au/ecards
http://au.greetings.yahoo.com/
http://www.123greetings.com/
http://www.ecards.co.uk/
If you’re not sure if an e-cards site is free of malware or othet net nasties, get the free Linkscanner program from AVG to check sites before you visit them.