First try the system file checker, sfc, see win help.
If that doesnt do it reinstall *all* your cannon software/drivers as per
cannon instructions. (usually install software, prior to connecting usb
device)

"Striped" <nospam@nospam.com> wrote in message
news:uutRJv37FHA.1148@tk2msftngp13.phx.gbl...
>I had accidentally deleted one or several files from the WINDOWS folder, so
>now I cannot connect my camera to XP through the USB cable.
>
> I downloaded WIA drivers from the Canon's website and can now see the
> camera in Windows Explorer but "Camera and Scanner" wizard still doesn't
> work. The systems beeps when camera gets connected but the wizard itself
> doesn't show up.
> If I directly go to the wizard, I can see the camera but the files cannot
> be downloaded.
>
> The list of files I have in Windows folder:
> Windows/twain_32/wiatwain.ds
> Windows/twain.dll
> Windows/twain_32.dll
> Windows/twunk_16.exe
> Windows/twunk_32.exe
>
> Is there any chance I can insttall a windows component or a third-party
> app so the wizard will start working again?
>
> thank you!
>