It's worth noting that if you have a Path of Radiance save that was played under Easy mode, you have to delete it before you can use the transfer data feature of Radiant Dawn. This is due to a glitch probably coming from the Japanese version of Path of Radiance not having a Easy mode.
--
Pokemon VGC2011 NW Regional - Top 8
Pokemon VGC2011 US Nationals - 54th place