The drivers for supported OS versions are available here: http://support.visioneer.com/products/8700/downloads.asp
. The supported OS versions are: Windows XP SP 1 / 2000 Professional / Me / 98SE and the additional software that was bundled on the CD is not included.
If you have a different Microsoft OS, you can check the Microsoft compatibility center for either Vidat or Win7. A check of the Win7 compatibility Center http://www.microsoft.com/windows/compatibility/windows-7/en-us/default.aspx
showed some Visioneer OneTouch scanners work with Win7. However, the 8700F is not in the list.
I hope this helps.
(Dual boot with XP or a virtual computer with an older valid OS version will work. The Win7 Pro and Ultimate let you use Virtual PC and XP mode to run an XP virtual computer for free.)