Here is a list of other cold-temperature issues to be aware of:

Displays:

	CRT - CRT's will work however, one must allow for the unit to
warm before operation.  Most CRT's require a minimum temperature of
around freezing (or higher) before operation.  Condensation is a problem
with the high-voltage flyback transformer also, however this can be
remedied by using a solid state flyback.  One must also becareful of
extereme temperatures, due to the nature of glass itself, which can
crack or explode if the differential is too great.

	LCD - LCD's are difficult due to their liquid nature.  Once
frozen, an LCD's operational characteristics change forever, either
ruining the LCD or causing a significantly reduced lifetime.  Most LCD
systems require a heater (small peltier effect) unit before operation
can be assured.  *NEVER FREEZE AN LCD*.  If your temperature goes below
freezing, you *must* have some sort of heater to keep the LCD above it's
rated temperature.

	VFD - Vacumn Florescent Displays are useful in a wide range of
environments.  It is one of the few components that will work in both
cold and hot enviroments.  Due to the vacumn nature of the display, very
little must be done to handle these exteme environments.  Graphic VFD's
are available, in color even, for a modest price, and even include
serial interfaces like LCD's.  Noritake is a great mfg of VFD's.

System Hardware:

	HD's - Most HD's have a minimum operating temperature.  This
must be maintained only for operation.  Storage can generally be quite
lower (-20c operating, -40c storage).  A HD's biggest problem is with
the mechanics.  Below a certain temperature, the bearings and slide
mechanisims which keep the spindle spinning and the r/w head on an even
alignment go out of their rated histerises capabilities, causing read
and write errors.  Possibly even head crashes.  This can be remedied by
a temperature controlled environment.

	MB's - most solid-state electronics work better when cold.
However, extreme temperature differentials cause differences in
operation.  A transistor rated at room-temp reacts quite differently at
-40 degrees Celsius (it's the nature of silicon).  Thus, most MB's and
solid state devices have minimum rated operating temperatures.  Most
consumer quality stuff is rated to about freezing.  Higher grade
military or industrial MB's can be rated as low as -20 degrees Celsius.
Temp controlled enviroments work well here.

	Connectors - Yes, connectors.  All matter, besides a very select
few, change size dependent upon temp.  Constant differentials in temp
can cause mechanical connections (IDE Connectors, ISA connectors, and
such) to move or fall off.  This can be remedied by some type of lock
down (adhesive, tape, etc.) or some type of physical restraint to ensure
connection.  This also includes chip-sockets etc.  Check out JDR
Microdevices catalog for various lockdowns for chips, connectors, etc.

There is more to consider, but this should give everyone a good start.  

-Kevin