Comments links not working correctly

All of my comments links (either for a “regular” post or a syndicated post) point to urls that don’t exist and instead display the index.html file at the root of my website.

I understand others have had similar issues, and that they have been resolved, but I haven’t found any of the resolutions (I’d have tried them).

I am running WordPress 2.8.

My blog’s URL is https://www.inca69.com/Blog/ NSFW

Edit: I have searched for and read multiple threads regarding this issue, but found no resolution I could apply. Note: I am a total newb to php, but not to running my site.