Need help with Canon LIDE 25 Scanner in Vista

Hi Everyone;

I hope someone can help me out. I have a Canon LIDE 25 scanner that I
am trying to get to work with Vista.
Canon has Vista 32-bit drivers posted on their website. I tried
installing these drivers and the Canoscan software, but I am getting
error messages.

Firstly, the scanner is not showing as listed in the Canoscan
application - where you select what scanner you have.

Secondly, I keep getting a "TWAIN" error. I believe it says "no TWAIN
source detected.

I though I had everything installed right. There is a "WIA" driver
from Canon that doesn't seem to install at all.
I did have the scanner running for a while, the first time I installed
it, but ever since I rebooted it gives me the two errors above.

I hope that someone here has also installed a newer Canon scanner and
has worked this problem out.
Any help would be greatly appreciated.

Thanks!