JimH since I saw your post regarding changing the PC name here and it confirmed what happened to me last night I thought it deserved a post of its own.
http://yabb.jriver.com/interact/index.php?topic=58162.0I did not see this on the FAQ of the registration page (not that I really read it before I renamed my PC) but think it should added to the FAQ for others. Changing the name of a PC forces you to use one of your install keys. Not a problem if you have a good mjr file in the 14 day window.
I discovered this the hard way last night and am down to 6 remaining and getting a little nervous since I still have all most an entire year before it gets reset. Normally it is not a problem for me as I load on 4-5 PCs at home and 1-2 at work. I always have to reload OS one time a year do to clutter my kids put on them and did that this weekend. So I should be able to make it. I have been nonchalant in the use of the mjr file or the web registraton evidently since I still have 6 left and just reloaded two operating systems this weekend. Guess I have to do the rest in 10d. Unfortunately do to my ignorance I generated a new mjr last night not thinking to dig the one from my trash bin from the OS reload last weekend.
I have used the mjr file but didn't quite understand the difference of using it vs the web page and that the mjr if used in the 14d does not decrement against your install limit. So it has been a good learning experience for me. I will be using the mjr file when I am reconfiging my PCs so I do not use up all my installs. I had planned to postpone my renaming of the PCs for a while but now have to do it and reload some operationing systems in the next 14 days. Probably go with generic names since relocating from the game room to the living room is what made me want to change the names to be descriptive of location.
Hope others can learn from this.