wine users - Jan 2009 - On the way towards scanning - further hints?

I have an USB scanner which is working well and has been long supported 
in Linux now (Agfa Snapscan 1212U).
But I can't get scanning to work in  Wine, where I have installed three 
applications which should be able to scan (and which are running fine 
otherwise):

ABBYY FineReader 7.0 (OCR)
Irfanview 4.10 (image viewer)
Photoshop CS (of course, Photoshop).

In Photoshop's dialogue 'File - Import' I find
'snapscan:libusb:002:002'
among others (there is also an entry for gphoto2 camaras), but when I 
choose the scanner, I get a Photoshop alert saying there was a problem 
with the scanner. Below you find the corresponding console output with 
WINEDEBUG=+loaddll.
The other apps mentioned behave in a similar way.

Are there any hints to go further, or should I just sit and wait for 
things to mature?

- Fedora 10
- wine 1.1.13, compiled from source

Thanks in advance for any pointers
Klaus

------------
trace:loaddll:load_native_dll Loaded L"C:\\Program 
Files\\Adobe\\Photoshop 
CS\\Zusatzmodule\\Importieren-Exportieren\\Twain_32.8BA" at 0x3480000: 
native
trace:loaddll:load_builtin_dll Loaded 
L"C:\\windows\\system32\\twain_32.dll" at 0x61170000: builtin
trace:loaddll:load_builtin_dll Loaded 
L"C:\\windows\\system32\\gphoto2.ds" at 0x61190000: builtin
trace:loaddll:free_modref Unloaded module 
L"C:\\windows\\system32\\gphoto2.ds" : builtin
trace:loaddll:load_builtin_dll Loaded
L"C:\\windows\\system32\\sane.ds"
at 0x61190000: builtin
trace:loaddll:free_modref Unloaded module 
L"C:\\windows\\system32\\sane.ds" : builtin
trace:loaddll:load_builtin_dll Loaded
L"C:\\windows\\system32\\sane.ds"
at 0x61190000: builtin
trace:loaddll:free_modref Unloaded module 
L"C:\\windows\\system32\\twain_32.dll" : builtin
trace:loaddll:free_modref Unloaded module L"C:\\Program 
Files\\Adobe\\Photoshop 
CS\\Zusatzmodule\\Importieren-Exportieren\\Twain_32.8BA" : nat