Le Havre/Normandy/Normandie

We are arriving in Le Havre on 29 March 09 and will be needing transportation to Caen. We hear transportion on Sunday is difficult. Is there a train or bus to take and what is the name of the station we would be arriving.

On 31 March we want to leave Caen to Brussels, preferbly by train. Is there a fast train name, cost , and time frame between destinations? Thanks . Denise