Enquiries on the VNC free edition license agreement for windows

[Mark Kang, Beng Kiong]

Hi,
We would like to find out more about the license usage on the VNC free
edition for windows.

Questions:
1) Is the free edition available for only personal use? 
2) If we dun modify, re-program and distribute it, can we use the free
version to be installed on our production server just for viewing and
administration purpose?
3) Must we purchase enterprise edition for use on our production
servers?
4) What are the license agreement we will need for the free edition?


Thanks