I've done this myself, but by far the easiest way is to use a router (ideally one with a build in broadband modem), have that dial up to AOL Broadband, and plug the PCs into that. You'll need to set your password to something shorter than 8 characters, and use the primary username, but once you've got the router dialled up, it's plain sailing - just plug each PC into the router with a network cable, and tell them to use "local network connection" for their internet access.
An added advantage of this approach is that you need never see AOL's horrible software again.
G