Corruption in Accessibility features -- how to disable?

[Jan Works]

After much trial and error I have figured out that the Accessibility
Options of Win XP Prof are corrupted and not working correctly. I don't even
use them so I have no idea how they got "set" but they interfere with way
IE, OE, Acrobat 5, and a few other programs look and work. I found
instructions for reinstalling the Accessibility Wizard which I can use to
set an option that they "turn off" or time out after the computer has been
idle for 5 minutes, but I am not able to "Adjust the contrast for text and
colors on your screen" Nothing happens when I click on that. ....
What I would really like to do is disable them completely so they don't even
launch and I don't have to wait 5 minutes for everything to return to
"normal." Anyone have any clues how to do that without having to do a repair
installation of the OS?
Thanks
Jan

 

[Jan Works]

No go. When I open Accessibility Options I am presented with just two tasks:
Adjust the contrast for text and colors on your screen (nothing happens when
I click on it) and Configure Windows to work for your vision, hearing and
mobility needs. The first time I clicked on the 2nd task I got an error
message which led me to Help where I found instructions to reinstall a
corrupted Accessibility Wizard, which I did and that's what I used to
specify turning them off after 5 minutes (they turn off after five minutes
whether or not the computer is idle, even while I'm keyboarding.) There are
no tabs to be found; that's why I believe the module is missing or
corrupted.

Any help for me?
Thanks
Jan