Mozilla is located in the 1st CD, this is the path
/mnt/cdrom/RedHat9/RPMS/
find "mozilla-version-i386.rpm" and not something like
"mozilla-mail....rpm"
When u initiate rpm -e mozilla.xxx.i386.rpm, it will delete all the folders and directories. But, PLEASE dont remove any local files in the directories or sth ugly will happen.
Let RPM do all the work.
But at ur own risk. If u want to remove then u may go to /usr/lib/ where u will see 2 mozilla folders. One is "mozilla" itself and another is "mozilla-1.x.x" . If it's not there then it's at /usr/local/
BUT, dont touch this directory if u can. Unless u know what u r doing.