I spoke with "tech support" at Fujitsu today. They informed me that they had only recently begun "beta testing" of ScanSnap
drivers for Windows 7. Mind you, this is
months after the release candidates were available for Windows 7.
According to tech support, there will be no
driver support until sometime in January, 2010. No, it won't run in any compatibility mode, and no, they can't explain why no one has been doing any
driver coding at Fujitsu even though they were fully aware that Windows 7 was launching.
My guess is that the person in charge of keeping things up to date there is someone's child or bed partner, because they are not doing a very good job.