sharutils-4.7-6.1.el6.x86_64.rpm for REL 5.5 - can't install

Hi,

I have a system with REL 5.5 and need to install a RPM ( sharutils-4.7-6.1.el6.x86_64.rpm and glibc-2.12-1.25.el6_1.3.i686.rpm ).

When I install the rpm (which is for v 6) it states " rpm --install --nosignature sharutils-4.7-6.1.el6.x86_64.rpm
error: Failed dependencies:
rpmlib(FileDigests) = 4.6.0-1 is needed by sharutils-4.7-6.1.el6.x86_64
rpmlib(PayloadIsXz) = 5.2-1 is needed by sharutils-4.7-6.1.el6.x86_64

It seems because it's not a REL 6 system. What are my options (can't update to REL 6)

Thanks in advance.