Actually, they -all- had networking, apart from Spectre Challenger, which was the stripped down version included with LCs and Performas.

Anyway, so long as you have two or more Macs with AppleTalk enabled, you should be good to go. LocalTalk is definate, although I can't see why it wouldn't work over ethernet. As for remote networking...it *might* be able to work over Apple Remote Access or whatever, but i'm not really sure.