As for fixing it to a case - may I suggest Sugru?
It is a soft, non-conductive moldable putty that is malleable for 30 minutes, but sets like rubber after 24 hours. It is fantastic stuff, I use it all the time to make quick mounts for things, including some fairly robust mounts in my current robot.
Never fear as well, as it can be removed fairly easily if required. My only advice is just be careful which bits of the board you mount it to if you ever plan on removing it again.
Morrolan / FeersumEndjinn
"And the lord God said unto John, 'Come forth and receive eternal life', but John came fifth and won a toaster."