Is Problem Windows, or Imaging?

[Norm72]

For some time now, I have been unable to open graphic files on my hard drive. When I try to do so, with a right click or left click, I get a message Error starting program - a required .dll file TWAINPP was not found. I have tried uninstalling the scanner software - and gone into regedit and deleted references to Canon and found TWAIN files and deleted it and then reinstalled the software - nothing has worked. Now, I wonder if I should run a restore of the original system software. The Canon scanner won't work any more either even with downloading and installing newest drivers from their website. All help greatly appreciated.
Norm72

[Steve R Jones]

Your scanner has NOTHING to do with not being able to open pictures on your computer.

If you right click and select open with->try MS Paint and see what happens.

[Norm72]

Steve,
First thanks for your post. After your suggestion, I did use Paint and was able to open many of the files - those that ended with file extension jpg, but not gif's. And I can not attach these graphic files to e-mail messages as I could previously - actually I can, but after attaching - I get the same error message when trying to open / work with them. I also have an WIA on the system from installation of a digital camera - could that be conflicting with TWAIN? Really, I am asking how to correct the problem that is causing the error? If I search and find all the TWAIN files and delete them - and the WIA file - and then run a Restore - without formatting - - do you think that will correct the problem?
By the way, I have WinME on a SONY VAIO 40GB HDD, 368RAM, AMD AThlon, 1GB processor.
Lastly, I really appreciate any and all help I receive.
Norm72