http://bugs.winehq.org/show_bug.cgi?id=18223
--- Comment #6 from Andrew Charles Hurst a.hurst@shef.ac.uk 2009-04-27 14:52:50 --- That's fine: drive_c is the default path, you'll find it defined as a disk drive using a symlink ~/.wine/dosdevices/c: -> ../drive_c or similar. Just checking it was in a path windows programs can 'see' through wine.
I'm guessing this is a language problem since the english version works ok. It's a regression (put that into the bug keywords above).
Can you do a regression test using GIT? If not, can you test previous wine versions available through synaptic?
Finally, perhaps you could host a .iso image of the Italian CD somewhere so that others may do the regression test?