Hi,I have ben running RC 4.2XXXX on a client machine for FS9. I recently purchased a quadcore so that I can run bot FS9 and FSX. I have a couple of questions:1. Can I move RC over to the FS machines and let it run on the unused cores without losing performance? If that's a good idea do I need to set core affinities?2. I know I need to download and install version 4.3. If I decide not to use the client machine, do I need another registration key to install on the FS machine.Any help would be appreciated.ThanksJeb

1) IMHO, let the OS manage the core affinities2) if you need a new key, you can get new keys at any timejd