Here is what I found, with the answer: http://social.technet.microsoft.com/Forums/en-US/itprovistahardware/thread/f2d460e8-bb39-4576-86f6-4615fdb88049/
A long thread but several people claim to get the 4400 to work with Windows 7 using the method described.
I have an older model scanner Visioneer 4400 US.
How can I use it with my new computer that runs window 7???
Thanks to anyone that can help.