Trial to create installation source

I upgraded from SuSE 10.0 to SUSE Linux 10.1 and lost in doing so shlibs5 which I need for running my good old WordPerfect8 for Linux. I got that shlibs5 in 10.0 from my Linux 8.1 DVD. In 10.1 Yast refuses to create an installation source for that DVD. In 10.1 Yast can't configure a CDROM anymore. When I try to mount that DVD I get the message 'Can't find /media/dvd/ in fstab'. As 'su' I tried to change fstab with Open Office. It failed. Which angel gives me right inspiration? André den Oudsten