Not 100% sure what the actual problem was, but I’m pretty sure it had something to do with Air Video.
I had Air Video installed for the third iPad I had, but when I got this “new” one, iTunes couldn’t detect it. The last.fm scrobbler saw it, so did Windows 7.
So I went to uninstall everything Apple installs through iTunes (six things listed here), but realized that Air Video requires Bonjour to work, which I found out as I was coming back from a reboot after the uninstall of said six things.
Now it’s all good in the hood. Hopefully this helps someone else.
// BTW: On a Mac? What ‘Control Panel’? What ‘System’? What ‘right click, update, go through directory structure to find a driver folder’? Ahem.