13 meg size - it contains all components that it could possibly need to be installed. I.E. if someone has a bare system that hasn't had anything installed on it, the package has everything it needs. I could of made it 1.3 megs in size but that would of limited it to people who have the other components, and in my experience with dealing with people and computers, just because one person has something that the program requires to function properly doesn't mean someone else will. so rather then limiting it to just a tiny group of people, I included everything it could need. hope that answers your question kawecki.