Sure Zombies make no sense on many levels but if you can acheive the technology to disassemble and reassemble items on a molecular level . . . well . . . basically all your needs are now taken care of forever.
Not to mention the fact that genetic augments have blood apparently that can bring people back from the dead.
I don't get how people can accept the plot of Trek XI and think that fast moving zombies with incredible levels of smell just stretches disbelief to the breaking point.