I was looking for a temp. display for my case, too.
Newegg doesnt have a very large selection of temp displays (according to the search I did on there -- just search "temperature display") and this seems to be the only one that fits the "theme" of the Antec Nine Hundred.
Newegg.com - NZXT SENTRY 1 Controller Panel - Retail
From what I read though, it's really low quality?
Am I looking in the wrong section, or are there just not very many good temp. displays on Newegg?
(I don't care about the fan control stuff -- the Antec fans have the 3-speed controls built into them, I read)
And about the case... if there is no back grill, is it still possible to mount a fan back there? (just ordered my case, it hasn't come yet)
Sorry... 1 more question... how difficult is it to install these temperature displays? I've only put together about 3 machines -- and they had nothing fancy on them.