from 7.2 to 7.3 ?

Dear Gurus, I have a running Suse 7.2 I downloaded all 7.3 packages from an ftp-server and have it now on a CD and my local hardisc I dont have an internet connection on my Suse 7.2 computer * Is it possible to update from 7.2 to 7.3 from the local hardisc or from my CD with the packages ? * Is it possible to update from the running 7.2 system or do I have to boot from a bootdisc ? * How is the update done ? by YAST ? * Is there any order I have to install the packages ? Thank you for your help !! Leopold l.zyka@ping.at