WinZip has always stated that if you purchase their program, you are eligible for all future upgrades of WinZip. I was just looking for the information on the site, but I can't seem to find it. I've been using WinZip for years (since 3.2 if I remember right). Because of that, I've obviously been using the same serial number, but I've also made contributions to the company because I have always liked their product for extracting Zip files. So, even though I didn't have to pay more than once, I did because I felt it was the right thing to do, especially after using their program for as long as I can remember.

AJ