Below are some links covering the types, meanings, and history of the flags of the Confederacy.
From Shotgun's Home of the American Civil War - The Flags of the Confederacy.
From Wikipedia, The Free Encyclopedia - Flags of the Confederate States of America.
Today is seems to be “politically correct” to fight displays of the Confederate Flags. Our brothers, the Sons of Union Veterans of the Civil War, passed a resolution in support of flying the Confederate Battle Flag. That resolution can be viewed on their web site at http://suvcw.org/flagres.htm.