editing sidebar ‘recent comments’ help?

First of all my link is definitely NMFW. [Not suitable for anyone under 18 years of age.]

I am trying to modify wordpress to make it search engine friendly as well as standard compliant. One of the many requirements is to get all html anchors to have a title attribute. <a href="" title="title of link">

I have added the title attrib to much of wordpress (which incidentally should be done by default) but there are a few places I am still unable to figure out.

First and most importantly are the recent comments. I would assume that comment-functions.php would be the correct file to edit and was able to add a title to the comment author link page $return = "<a href='$url' title='$url' rel='external nofollow'>$author</a>"; however I am not able to find where to add a title to the comment permalink. This is for the sidebar only, not the article header comments.

Under every article title header of my template, you see the categories, an |edit article| link (if logged in), and an ‘X comments’ permalink. This is NOT the link I am referring to. See my website to understand exactly what I mean.

I also need to figure out the same information for the “recent posts” section of the sidebar. I am using sidebar widgets in case that information is important. Again I stress my website is NMFW and is definitely NOT for anyone under 18.

Please help?