[Library] libXm.so.3 missing

[ko0nz]

Hi,

I've just installed RHEL v4.7.
I was used to use "yum" to do everything...
And i'm not very good with "up2date" and "rpm" :)

I've have a missing library:
error while loading shared libraries: libXm.so.3: cannot open shared
object file: No such file or directory

So i've tried to install "openmotif".

# rpm -qa openmotif
openmotif-2.2.3-10.2.el4

 # up2date openmotif

Fetching Obsoletes list for channel: rhel-x86_64-es-4...
########################################

Fetching rpm headers...

Name                                    Version        Rel
----------------------------------------------------------


The following packages you requested are already updated:
openmotif

So it existe the package but it can't find it...

what's the problem?

Thank you in advance for your help.