Reiser FS in linux-2.4.0.SuSE-7?

Hello SuSE folkz, Just downloaded linux-2.4.0.SuSE-7.tgz kernel and tried to compile it. Surprisingly Reiser FS didn't show up in File Systems configuration menu. Even though I saw Reiser FS modules in linux-2.4.0.SuSE/fs/reiserfs directory. Could somebody please give me a hint how to enable Reiser FS in this new kernel configuration menu. Thanks in advance. Alex