[CentOS] CentOS 4.4 - postgis / postgres Issue

Hi

I know this is not directly centos related but if anyone has used 
postgres before then that would be a help!! Normally i'm an oracle or 
mysql guy.

I have to install a qa postgres box that uses postgis. All seems well 
but when the devs import the schema this happens...

ERROR:  could not access  file "$libdir/libpostgis.so.0.9": No such file 
or  directory

and indeed that library does not exist anywhere on the box.

I have looked at the rpm downloaded from postgis.refractions.net and 
again this library is missing.

Is anyone familiar with this setup and know what could be wrong? This 
was installed using rpm's and not compiled from source.

thanks