We are trying to load ACAD2004, LDT4,Civil4,Survey4,ADT4. All of the software has the same serial # and CD Key. Is that normal? We are having trouble getting it loaded on our network and was curious if this could be causing the problem. We are using XP Pro. After loading ACAD2004, we try to load LDT4 thru the Network Installation Wizard and we get a message asking if we want to 'repair' or 'remove' the corrupted files that it sees.