Upgrade from FC7 to FC8 test3 via yum

[Arch Willingham]

For a variety of reasons, I can't physically get to some of our FC7 machines but I log into them via putty. From what I understand, upgrading via YUM from one version to another is about like standing in a tub full of water with a 220 volt wire in your hand while wearing insulated gloves. It may work, but if it doesn't the results will not be pretty.

With that said, I'd like to try it with one of our FC7 machines. How do you do it (I see a FAQ at Fedora but it pretty much talks about FC6 to FC7 and the problems with the new drive names)? Also, at what point does it start gulping down FC9 updates and how do I prevent that (I assume the obvious answer is to not run yum update after FC8 is released)?

Just curious.

Arch