Just to let CrossOver users know that e-Tax 2012 does work in WINE. I have it running using a Wineskin bottle. I needed to install Internet Explorer 7 and msxml4.dll. I used Winetricks to install those tools. They are needed to contact the ATO - the main problem in the past.
Help still does not work. However, I believe a web browser can be used to access the help files.
For more detail on user experiences, go here: http://appdb.winehq.org/objectManager.php?sClass=version&iId=26289&iTestingId=74690
Cheers.
Garry Brooke