Thanks for the reference, Tony. I'm not yet convinced that I can't make this work. But at the very least, if I do go with a permanent install, you've reminded me that I need to bring feed for the serial port around to the front, not just the Ethernet port... Since I have a laptop (and I will for the indefinite future, that's the way I prefer to work) I'm not as concerned that I'll have to bring my computer to the car to do a kernel upgrade or anything like that.