So, we have two little tykes at home. One is 5 and one is 8. I want them to be able to access our HTPC on their TV downstairs. First off, is it best to do this (our home is not wired for ethernet) using power lines or wireless? Second, what sort of box should I use for them to be able to access the HTPC. Third, if they are downstairs on their TV and we are upstairs on our TV, can they watch one thing while we watch another or can only one person access the XBMC front-end at a time? Fourth, are there any sorts of parental controls or make it so, on their TV, they can only access certain movies, tv shows, music? Thanks people!