The 6.x version also depends on Comment Bonus API (not maintained anymore)
The 7.x version does not.
Provides ajax comments to Drupal sites. Features:
- Makes AJAX submits
- Allows replies to comments on the actual thread page
- AJAX comments deleting
- Works with CAPTCHA
- Cool jQuery sliding
- views integration
Please review the README.TXT file before installation to avoid trouble.
If you're using FCKeditor, you should upgrade to 2.x, to be able to use ajax comments (FCKeditor<2 is like a bag of crabs for developers).