Howto | Install Scanning in Wine21 Mar 2009
Ensure you install the same version as wine. For me that meant installing as follows:
$ sudo apt-get install -t 'etch-backports' libwine-sane
This worked to a fashion for me; in that it brought up a rather poor scanner dialog, and triggered the scanner, but never completed the scan job. That said, I was using saned on LTSP (i.e. via network) which may be a step too far for libwine-sane!