Upgrade to 9.1 via FTP when available???

Hello suse-linux-e, I've been asking about how can i upgrade from version 9.0 which is my installed SuSE to 9.1 via FTP?. Which are the risks and steps to take to do a clean upgrae with no side effects. Would you give me a hand?. TIA -- Best regards, David mailto:test@tuxcafe.com