We Have Wipro voyager system with PIII 550E and 128 MB Ram, Intel 810 Mother Board RTL8139 NIC and D-Link 56 KBPS External modem and a Cable NET Connection using static IP and O.S Win-98-se all working well. When we Installed Windows2000 Prof If Sound or Modem accessed the cable Net connection is Broking and gateway is not pinging.How can we solve the problem ?