rescue disk for 7.3 is 5.3?

I have just created a rescue disk for SuSE 7.3 using yast. It retreived the disk image from ftp.suse.com The disk it created says "Welcome to SuSE 5.3 kernel 2.4.10-4GB" The files on the rescue system have creation dates from 1998, so I do not doubt that they are from SuSE 5.3. My problem is that I am trying to switch to ext3, and of course, the tune2fs from 1998 cannot do that, there is no -j option. How do I create a 7.3 rescue disk?