These are 3rd party stuff and need to be loaded seperately.
If is best to install the stuff from the original disks rather than just copying files.
Thankyou I will reinstall them. When I went from photoshop7 to CS3 they were install automatically so I thought that they would do the same from CS3-CS5
Anoter note. If your filters are 32 bit and you are woking in a 64 bit PS the filters may not work.
When I went from photoshop7 to CS3 they were install automatically
I think it's the Twain_32 plug-in that's not being installed automatically for you.
Adobe made this optional because so many scanners were causing trouble when they automatically included direct scanning support.
This page will tell you what you need to know about TWAIN scanner support in Photoshop CS5. Look in the Other changes section:
As Noel said, you need the TWAIN plug-in.