hi all,this is my 1st post so hopefully it's in the right place. i've been running 2 pc's(1 XP pro,other XP home) for about a year now,my isp is BT broadband,i am using the voyager 205 adsl router and a d-link des-1005d switch,had no problems what so ever.recently i've added a 3rd pc(XP pro)and after about 40 minutes with all 3 turned on,none of them can access the internet,the internet connection on pc's say it's connected,the lights on the voyager are how they should be when it's running ok and the d-link lights are how they should be,i can play a network game with all 3 with no problems at all,i am at a loss as to what to do next so any help would be appreciated thanks

i've disconnected 3rd pc from switch and just happened again with only 2 pc's and if i turn router off and turn it back on the pc's connect back up.