Well it is skidish, that's for sure[emoji14]
Just few things that i thought at first glance. If you put some intro text at beginning do multiline commenting like this:
"""
words here..
..and here
"""
Instead of multiple #, it's just clearer to read in my opinion. Maybe bit useless point, but just saying what i thought.
If you want to avoid using so much "os.system(command)" in this case, there is this nmap for python library. I have never use it but it seems something that might have been valid option for this program.
https://pypi.python.org/pypi/python-nmapedit: Also if you wanted to make this bit less skidish(even if it's kind of point here) maybe try to use some argument parsing instead all raw_inputs. Though in this case there isn't much difference from just using nmap then. [emoji14]