[Wlug] FC2 and FC3 to FC4 ... ?

Hey folks, I have an FC2 and FC3 machine which I want to get upgraded to FC4. In the past, I used to spend an hour or two doing this type of thing manually which was a pain but generally got the job done ... This time around I was thinking of either using yum or burning some CDs and doing the upgrade method (which the Fedora guys recommended to me). Anyone have suggestions about what method works best? Any gotchas I should worry about, etc? Thanks in advance! :) -- Randomly Generated Tagline: "If you lend someone $20, and never see that person again, it was probably worth it." - Zen Musings