I was able to get KQF 1.7.6 to work with WP 2.3.3, somewhat. It installs itself under the main dashboard. One compatibility issue right off the bat, most of the original WP dashboard seems to disappear.
To use, you simply add a feed, the feed has an ID. With that ID you are suppose to be able to call the feed anywhere. I used it in a sidebar widget and worked okay. Only okay, because it did not display like I wanted. Think it showed the date of each entry, which you don't need in a sidebar, nor have the room.
It's has templates for each feed, which as I guess you can set to display what and how you want of the feed. I found the template (pop-up window) confusing and complicated. There are like 20 little boxes for all kinds of settings. I didn't feel like spending a ton of time trying to figure it out, it's not real user-friendly if you ask me.
Course since the plug-in is not really being supported any more, it might not worth messing with. Though it seems like it could be powerful if you wanted to really customize your feeds. With a learning curve..
