rpm-4 suse support

Just curious about the support by SuSE for rpm-4. For a project I'm working rpm version 4 is needed. I'm currently trying to build an rpm package out of a redhat rpm-4 source package (spm). The creation of rpm fails :( But what if I would succeed in making the rpm for rpm4, could I just update the rpm tool (rpm -Uvh), or do I need to rebuild the rpm database? Coming back to my initial question: is it known when SuSE will introduce rpm4 into their distribution? -- Richard Bos For those without home the journey is endless