http://bugs.winehq.org/show_bug.cgi?id=29741
--- Comment #4 from boskar bozkar@gmail.com 2012-01-30 04:08:15 CST --- The best way is to simpy try to save a document in odt as here: http://www.microsoft.com/interop/graphics/featured/SaveAs.png
We can also search in +msi log of installation L"Word_ODCore" component, like here: trace:msi:ITERATE_WriteRegistryValues Checked and setting value L"Word_ODCore" of L"HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Registration\{91120000-002F-0000-0000-0000000FF1CE}\AdvReg"
-> So the registry key might be useful also.
We can also try to open odt file, simply.