Power zoom lenses

[Scott Loveless]

Howdy!  I'm noticing that Pentax states power zoom functions are not
available on the *ist film camera (which I have) and the *istD.  The
ZX-60 and the *istDS literature makes no mention of this.  Anybody
know if these lenses work with the latter two cameras?
-- 
Scott Loveless
Born free.  Taxed to death.