At first, I had a 7 and an XP on the same network, and could see the XP on the 7 box. Then I added another 7 (WiFi), and neither of the 7s could see the XP box anymore. Then I added a second XP, which the 7 boxen do see. So I decided to let that ride for a while.
So I checked to see if I could print documents from the (7) laptop, and have them pop out of the printer attached to my (7) desktop. No problem. And both of the XP boxen can see the printer. But they need a driver, to use it. Not sure which. Not sure where to find it. I apparently need the x86 driver to work with the old XP systems. But, bah, it's late. I don't want to analyze any more tonight.
And who killed Laura Palmer?