and see what happens.
I use Vuescan, it has never failed me, and is highly recommended.
I have a Cannon scanner N1220U, the drivers have never worked 'independently' and have always been photoshop plug-ins but this hasn't been a problem. I haven't used it for a year or so but it now wont work when I try to import images into PS Elements 6. I get a message, 'The scanner is not connected', the same happens when I try my old PS Elements 3 which always worked with it. I have downloaded the most recent driver from Cannon (3.8x) but no luck.
I have a PowerBook intel 2.4 GHz running 10.5.7 with 2 Gb of RAM.