Hi harvey,
The latest drivers and software for the CanoScan LiDE 35 can be downloaded free of charge from the Canon USA website here:
CanoScan LiDE 35 Drivers and Software page
If you would like specific instruction for installing the scanner drivers and software on your computer, please reply with what operating system you have (Windows XP, Vista, 7, 8, 8.1 or version of Mac OS X) and we will be happy to provide instruction.
Hope this helps!
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