Bri (and Kurt),I ran into the same problem when I first installed ZZ to an "existing" Tuelz folder.
What I did was delete the folder I had Tuelz in, open a new folder, download every Tuel into it, including ZZ, and then everything worked.
Although the other Tuelz additional mods seem to slide in seamlessly, ZZ seems to demand a new folder to start in. At least, that's what I was confronted with.
After a clean, fresh reinstall, everything worked find.
Bri, what you're looking for is, on the main Tuelz page, at the bottom of the module listings, you should see ZZ listed.
John