if your dvd player and HDTV have S-Video i/o then use that it is better than A/V Maybe find a better DVD player that have CC decoder built in that could send cc stream to HDTV: see this thread:
http://www.avsforum.com/avs-vb/showt...=846346&page=2
OR buy a mini sized pc or mac and use it as multimedia center. for example Mac Mini Intel has DVD drive and DVD Player software which has CC support can send cc to HDTV via HDMI (DVI to HDMI of course) in full HD glory. Also can watch HULU, Run Boxee whatever... (Best Buy has Dell Inspiron Zino HD )