President Bush signed into law legislation to create a new dot-kids domain on the Internet yesterday.  He said, Every site designated dot-kids will be a safe zone for children.  We must give our nation's children every opportunity to grow in knowledge without undermining their character...We must give parents the peace of mind knowing their children are learning in safety.  Lawmakers acted after the death of 13 year old Christina Long from Danbury, Connecticut, whom police say was strangled by a man she met in an Internet chat room.