The first step would be finding the exact
version of the 2.4... kernel you're using. To do so, type uname -r
at a console. You'll get a number like 2.4.22-10
or something like that (actually I'm using mandrake 9.2).
With this number you can search in your installation cd's for a file that has a name that reads like: kernel-2.4.xxx-src
and that would be your kernel source for the version you're using.
Post back the version of the kernel you have and wait a bit so a SuSe guru can be of more help
because I don't know Yast.