Hi,
With the current CVS version, the unixfs shell namespace extension is now registered by default at the desktop. So if you do a 'regsvr32 shell32' you will see the unix filesystem in the file dialogs. It's probably still quite buggy though. It would be cool if we could get the biggest problems sorted out before the next release. So if you have an application, which doesn't work due to unixfs, please report to wine-devel.
If you don't want to use unixfs, because you don't like it or because it totally breaks your setup, you can delete the following registry-key and you should be back to the old behaviour:
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\Namespace\ {9D20AAE8-0625-44B0-9CA7-71889C2254D9}
This will also help you to figure out if a problem is due to unixfs. If you do 'regsvr32 shell32' again, the key will be re-created.
Bye,