getting started

[orbiferrorum]

Hi everyone, I have a quick question.
i downloaded some UI's and installed them per the F.A.Q. on this site.
however, i do not see them show up as options on the options screen (the Misc UI skin drop-down) is there something I'm missing? i have just patched to book 12, is that an inconsistency, and will require newer versions of the UI's ? i remember patch day alway boogered up my old wow UI and it took me a while to get the latest versions, and settings tweaked.

or am I completely missing something obvious?

Thanks much,

John.