Anti-Spam Measures

I've finally put up a CAPTCHA test for comment posting.  This should reduce the amount of comment spam we've been getting.  All the credit goes to Davide Mauri for creating a detailed list of instructions for implementing this in .TEXT.  You can find the details on his other blog.  Previously I had restricted comments on posts older than 30 days.  I've removed that restriction.  Please let me know if there are any problems or if something doesn't look quite right.

I want to add that this uses a great HIP control by Kevin Gearing. Thanks Kevin!