First check net connection that the isp has not cut you off!..............type isp addy ...after ping command in msdos/cmd prompt.....check firewalls...check adsl modem/56 diagnostics...do you get a 961 error..or 404 error............and what o/s does this happen to! chck the events log..or net log..maybe another program you have has remove something...?last soulition last good config/or system restore...