It's great to hear that there's a workaround available for using the Canoscan LiDE 35 scanner on Windows 8 64-bit despite Canon stating there's no driver for it. This workaround was initially designed for Vista 64-bit but works for Windows 8 64-bit as well.
To assist you effectively, I'll summarize the steps mentioned in the link you provided for using the Canoscan LiDE 35 scanner on Windows 8 64-bit:
1. Download the Windows 7 64-bit driver for the Canoscan LiDE 35 from the link provided.
2. Install the driver on your Windows 8 64-bit system using compatibility mode.
Following these steps should enable you to continue using your Canoscan LiDE 35 scanner even after upgrading to Windows 8 64-bit. If you encounter any issues during the...