.com.au domain name query program

Guys, Basically I want a program which will allow me to do the following: Query the .[login to view URL] registry for all possible 3 letter domain names available (Using all letters and numbers) Additionally I want a seperate query to be done for all 4 letter domains (Using all letter and number possibilities) Output should be in an excel spreadsheet format so I can filter through all results. I want to be able to run this program on an ongoing basis. Any scripting language is fine as long as it is stable I will have to see working program before payment is made