best remote upgrade method (rh9->fc2)

[Paul Rennix]

can anyone give me some advice for a method to upgrade a remote server from
rh9 to fc2? Preferably via yum or similar as this server is sitting in a 
datacenter 1000
miles away and I don't have the ability to drop a cd in the drive.

Also, this is a production server, so some advice on how to this in the 
safest way would be appreciated.

thanks in advance,

Paul