maracas

I have a problem with the Samba de Amigo maracas. No matter what I try, the Dreamcast just doesn't detect them. The buttons work in the menus, but the motion detection never works in-game. I've looked in the manual and on Google for a solution, but I haven't found anything. I have my Dreamcast...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&hash=item4155f28093&item=280614830227&nma=true&pt=Video_Games_Games&rt=nc&si=0CmcdWI%252BnzbVqGP3bY2ZD%252Bp4FgE%253D#ht_769wt_894 These just sold recently a complete set, for $37.

Alright I'm going to buy this game, because it looks like crack. But I have question do they work on HDTV's or do they have the same problem as the light guns that don't work on hdtv's?