so i have a dlink router, 3 computers connected to it. No 3rd party firewall programs or anything like that. I was wondering if it's possible to go on the other comps on my network? Like go into the computer downstairs and copy+paste a folder to my computer. Also, with my router, can i block other computers from going into certain sites? Say theres computer A, B, C.... i want to block computer B from going to www.yahoo.com, is it possible to do from the 192.168.0.1 page?