Looks pretty good. The only optimization I would suggest would be to remove the Linksys altogether and just plug the upstairs computer directly into the router.
What scenario is causing you pain?
Perfect drawing, exactly what it is.
Problem is that "Boy 2"(as example) has Vista Home Basic on his laptop and he can't see shares on "Harlequin"(Vista Home Premium). "Boy 1" has XP Pro. Computer upstairs(XP Pro) can't see the share on Harlequin. I have music share and want to share with others,
but only my wife really has access to my share. Probably "Other computer" as well, but haven't tried.
Was easier before with XP since you could just put in //IP/sharename, but I guess you can't do IP shares like that with Vista.
Figured if all the computers came out of the same place, they'd see each other better. Especially with Vista.