ComputerBB

Hi im new on here so dont know if im in the right topic/forum but here goes my problem: We have a netgear router with one computer connected to it through network cables and two computers running off the router wireless. About a week ago we had no problems but just recently all the computers that are wireless cannot connect to things like msn, msn messenger, ebay, microsoft - it seems all sites controlled by microsoft wont work. all works fine on the main computer but anything wireless just has problems. msn is the most annoying one as we have our contacts and email on there which we cannot reach. This probably isnt very clear but if anyone thinks they know what i am talking about - maybe you've had the same experiance? id really appriciate it if someone could point me in the right direction. Thanks

maybe check the router to see if it has any filters or block lists on it for the wireless clients can they access the internet at all?