If your lookin for an inexpensive box for m0n0wall (or anything else)
I was surfing ebay and came across a vendor with some Dell Optiplex
GX150 Tower P3/1.0ghz. I was able to get two of them for less than
$150 US plus shipping. They have several more left
I could be wrong, but I thought this was a pretty good deal.
vendor name: assetrecoveryctsystems
or search for optiplex GX150
disclaimer: this is just an FYI. I have no relationship to this
vendor. Hopefully just passing along a good deal.