C750/760/860 not a problem. Got them all to work.
Used English Software with Japanese drivers on many occasions over several PCs. Consistantly seen it working. Had enough customers contact us when they got stuck to be confident that it works well subject to the usualy Windows "quirks".
C3000 however is another issue.
Have now tried it with English Sync. Software (The same software that works with the C860) on several PCs using both Japanese Drivers on the C3000 CD and the drivers from the C860 CD.
Have totally uninstalled and reinstalled inbetween. But no luck at all.
Installing the Japanese Sync. Software works fine, though not very user friendly. Just shipped out a batch C3000s with "more info to follow" on the best option for Sync.
Seen posts from Dynamism and Trisoft indicating that English Sync. Software works fine. Hence the questions.
Unless I'm missing something obvious or they are altering something on the units, I'm not sure it works. Hence the request for feedback from real users... See Poll
link)
Results so far (4 without English Sync. don't look good)