TOPIC: Accessibility changes needed

Some of our site users have accessibility challenges - from color perception to blindness. We have hacked the DT Register code to provide "alt" labels for all the graphic buttons (same as the button function, e.g., details for details button, etc.). The most troublesome issue, though, is the captcha. We have disabled captcha on our sight, but would like to use it.

Would you consider changing to an accessible captcha. Recaptcha, http://recaptcha.net/ , (recently acquired by Google) has options for both graphic and audio challenges. We'd rather not continue hacking the code, as it makes upgrades difficult.

Thanks for your consideration.