actually i just tried mine last night with the same results .. i have a WRT54G v2 (was) running DD-WRT v23 SP2 .. i started up kaid , put in my XBOX mac .. turned on the xbox , kai sees it , no games show up ..
I shut off kaid and use the PC engine , it works great.
maybe theirs something wrong with kaid in v23 .. have you tried 24 ? .. i will try it out later .. i put tomato on my router last night tho and its pretty cool ..
http://www.polarcloud.com/tomato ..