If you are referring to the font used when generating the captcha image, that one is randomly selected from several font families that are hard coded in the Captcha server control codebehind and cannot be changed without a DNN core modification - not recommended.

If you are referring to the font used in the help text, you should be able to modify that by creating a css rule. Finding the proper selector may be a bit of a challenge as there is no css class assigned to the div containing the text. I find either IE Developer Tools or Firebug for Firefox invaluable when looking at what css rules and inline attributes are applied to individual elements.

If you are referring to the font used in the error message displayed when an invalid captcha response is submitted, that can again be styled via css or by use of the ErrorStyle property exposed by the Captcha server control. ErrorStyle is a standard ASP.Net style property. I believe that it defaults to css class NormalRed.

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Bill, WESNet Designs
Team Lead - DotNetNuke Gallery Module Project (Not Actively Being Developed)
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