Mandrake 9.2rc1 and 2 seem to have this menu feature... though I've been too busy messing with getting more menu entries to try it atm
9.2 is also meant to ship with a 2.6 test kernel, and there are several pre compiled in the Cooker (Mandrake development) contribution mirrors, and some 2.4 kernels with the pre-emptive patches applied, etc.