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All of the top modded posts seem to be advocating using off the shelf computers, and keeping them warm. The question I ask, is how much processor power do you really need?

If I were looking for a computer for that environment, I would be looking at Rugged off the shelf (ROTS) (As opposed to commercial off the shelf - COTS) products. Single board computers are your best friend in these conditions. Yes, you will pay a premium for them, but extended tempurature models operate down to -40 C. For example:
http://www.versalogic.com/Products/DS.asp?ProductI D=170

Now, monitors can be a little trickier. To get that kind of operating tempurature in a display, you are either going heavy industrial equipment, or military, and you will pay a premium on those. If you don't need a display, or can get away with a small 4x40 LCD module or something, that would be a much better approach I think.

There are a lot of them around. Google for "single board computer", here's an example: http://www.versalogic.com/Products/DS.asp?ProductI D=170.
But you have to sacrifice the speed a bit.

300mhz Geode processor (I have seen up to P3 700mhz boards)

256 memory

512 flash drive (for OS)

compact flash (why use a HD?)

OS? Windows to linux to a half a dozen others..

for under 600$

Hmm, now I may have to tinker and build a car PC now... in any case.. I will have 10 of the above in a month :)

info to get ya started:

kontron
winsystems
arcon
versalogic
m-systems (storage)

There is another compact standard called EBX that has higher computing power, such as those at Versalogic.

I am a resident of Eugene, and I would like to inform you that Symantec is certainly not the only option. For example, Eugene is also home to game maker Dynamix, embedded hardware manufacturer Versalogic, a large Hyundai DRAM fab plant, and lots of small software development companies.

Many smaller companies choose to locate here, because we have clean water, hydroelectric and wind power, abundant local pruduce, clean air, multiple DSL providers, and now cable internet access, too. We also have low crime, good schools, and clean streets. Eugene is, in fact, one of the fastest growing tech centers in the Northwest.

Eugene is also home to the University of Oregon which you may have seen mentioned in a recent article on new research into quantum computing. They also have LAN connections in all the dorm rooms.

Sure, if your concept of a good job is working for MS or some other large corporate slave driver that will keep you in a small cubicle and feed you the scraps, then Symantec might be your only option here. But there are also a lot of good employment opportunities available here, also.

But, I think you're misreading their site: it says, "Price reduced up to", not "Price reduced to".

i.e., they've knocked some amount less than or equal to $180 off the regular price of the board. I still want to build my own car MP3 player with something similar, though.