I've read a few threads here stating that NIS 2010 can be installed on top of NIS 2009 with no problems and that was my plan when the subscriptions on my 3 computers expire in a few weeks.
However I read a thread a couple days ago stating it needs to be a clean install if you have XP,while with Vista you can install on top.
What is the correct procedure? I have a desktop and a laptop with XP,and one laptop with Vista Home premium. I have a 3 license box set but planned on downloading instead of using the CD.
Thanx
villasbill