Hi Adam and welcome. You got it almost right,
all not "some" of your K1000 lenses will fit and be perfectly useable on any of the digital pentax bodies. All you have to do is make a small menu change, it is explained
here in the sticky titled "using manual lenses..." It's one of the great selling points of pentax. But don't foget your K1000 either! We have a good "film" forum too! Can be found
here.
NaCl(have fun and don't forget to show us your shots!)H2O