http://bugs.winehq.org/show_bug.cgi?id=14798
--- Comment #22 from andrew@magneticbooks.com.au 2011-06-28 00:41:30 CDT --- I have tested pre-fill using etax 2011. It gives an Error 5011. I am not sure whether this is because pre-fill is not yet available (I am testing on the 28th of June)