Rest easy
Dozens of people offering helpful suggestions for me and Roger to link up our computers in dozens of configurations and with every add-on component known to man -- I should probably clarify and point out that it's not actually a problem: we're both on wireless, and e-mailing files is as quick a way to get files across the room as anything else (and a damn sight faster than bluetoothing, in truth). So do not worry, and thanks to all.