PHP 4.3.1 on Suse 8.1 ?

Hi, I have a running site with the default PHP delivered on Suse 8.1, now I need to upgrade to PHP 4.3.1 and was wondering if anyone has a RPM for this PHP version for Suse. If not then what is recommended to be done ? Additionally I do not want to land up with problems on our site and what all should I back up from the 8.1 system to ensure that in case the new release does not work I should be able to do a rollback on the same. Vishal -- -