Delete files from /lib/modules?

Hey,

I'm trying to run some kernel updates on a redhat enterprise server but get the following error...

Fetching Obsoletes list for channel: rhel-i386-es-4...
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Fetching rpm headers...
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Name Version Rel
----------------------------------------------------------
ed 0.2 36.el4_7.1 i386
kernel 2.6.9 78.0.5.EL i686
kernel-devel 2.6.9 78.0.5.EL i686
kernel-hugemem-devel 2.6.9 78.0.5.EL i686
kernel-smp 2.6.9 78.0.5.EL i686
kernel-smp-devel 2.6.9 78.0.5.EL i686
kernel-utils 2.4 14.1.117 i386
sos 1.7 6.6.el4 noarch


Testing package set / solving RPM inter-dependencies...
########################################
RPM package conflict error. The message was:
Test install failed because of package conflicts:
installing package kernel-smp-2.6.9-78.0.5.EL needs 26MB on the / filesystem
installing package kernel-smp-devel-2.6.9-78.0.5.EL needs 26MB on the / filesystem
installing package kernel-utils-2.4-14.1.117 needs 27MB on the / filesystem

there isn't much space in / but there's 313mb in /lib/modules....which contains the following

2.6.9-34.0.1.EL
2.6.9-34.0.2.ELhugemem
2.6.9-42.0.2.ELsmp
2.6.9-42.0.8.EL
2.6.9-5.ELhugemem
2.6.9-34.0.1.ELhugemem
2.6.9-34.0.2.ELsmp
2.6.9-42.0.3.EL
2.6.9-42.0.8.ELhugemem
2.6.9-5.ELsmp
2.6.9-34.0.1.ELsmp
2.6.9-42.0.2.EL
2.6.9-42.0.3.ELhugemem
2.6.9-42.0.8.ELsmp
kabi-4.0-0
2.6.9-34.0.2.EL
2.6.9-42.0.2.ELhugemem
2.6.9-42.0.3.ELsmp
2.6.9-5.EL
kabi-4.0-0smp

Can I safely delete/move some files from this directory to free up some space?

Thanks

 

What's the output of

Code:

df -h

?