To download the Plustek 64bit drivers go to the Plustek site at;
http://plustek.com/uk/support/drivers-a ... loads.html
Then choose the OpticFilm and 7600i SE and you will be presented with a list and its the version 4.2.0.1 driver you require with the filename A28_V4.2.0.1_13L_x64.zip
Once downloaded uninstall the current version, reboot the computer and double click on the setup.exe file which will then start the installation. Once installed you will again be prompted to reboot the computer and the 64bit drivers will be installed. Note that the installation will indicate the files are being installed in a (x86) folder but the 64bit files will still be installed.
I can confirm that the 64bit version of SilverFast works with these Plustek 64bit drivers without any problems (so far!). It does appear to be slightly more efficient in processing the scanning.

