I have found a nifty little program called Linkman, it stores your bookmarks in a database, and you can put keyworkds in for the page, so you can type say "cars" and it'll search for the keyword.
It also supports comments, ratings, and a whole lot more. It is shareware however, which is the only downside I see.
Try it out, at
http://www.outertech.com/index.php?_...e=product&id=5
Hope this helps.