BATTERY DEAD, NO RADIO

Hello,
recently my battery went dead, after replacing the battery the radio (navigation) no longer works, how can i fix this?? It just has no power
2003 sts

Thanks

Get the owners manual out and check the radio fuse. Maybe it blew. Other wise disconnect the battery for about 10 seconds, with the key off, then reconnect it. Maybe the radio will reset.

hmm..could this be a security coding issue?