wath paket for wath suse

hello lsit, a fundamental question: how ore where i see wath packet can i install for wath suse-version example: when i use suse 7.0 i want to install the newest openldap-server 1. possibility: go to the suse ftp-site, under suse 7.0 and look for the newest openldap-rpm 2. possibility: i get the newest rpm maybe from suse 8.0 and trie to install, if works fine, if not i try the rpm from suse 7.3 ... other possibilitys ?? thank you for a answer/doku-link luis