Captcha case insensitive

[mw4]

Is there a way to make the captcha case insensitive?
Mine appears to work only when you type in the characters in upper case.

[arbei]

You need to manually customize the captcha extension's validateCaptcha() method.

[mw4]

Where/How would I do that?

[mobhar]

Please read "Customizing Template" topic from PHPMaker Help menu, and then see "Extensions" section in that page.