Uninstall existing - postgesql 7.3.2 - Mailing list pgsql-general

Hi,
 I am using Redhat Linux 9, I need to uninstall postfesql 7.3.2 and
 i have to install postgresql 7.4.5. Plz let me know how to uninstall
completely - postgesql 7.3.2

I am getting as [root@set root]# rpm -e postgresql
error: package postgresql is not installed

if i try to check the version it was displaying
[root@set root]# postgres --version
postgres (PostgreSQL) 7.3.2

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Warm Regards,

S.ElayaRaja
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