’’Installation is a problem’’ Installation does stop if you have any previous version on your pc. The software should have a program to clean out any previous versions. I also upgraded to NAV 2002 for the simple reasoning that newer is better. This is NOT true. I liked the 2001 interface alot better as well. Someone said that it didnt slow their pc down? Well it sure slowed down mine, and I noticed that right away compared to version 2001 which didn’t. All of a sudden I felt like I was on version 2000 which also slowed my pc down. At least 2001 didnt do that at least. Cons: For some strange reason, NAV2002 doesn’t show scanning progress (percents) so you can’t tell when the scan will end, that part is also true. Other then the minor upgrades, 2001 you were still the better version.....