I have upgraded from Windows 95 to 98 and have had a new modem installed - an Ambient HaM Data Fax Modem. The guy who installed it has tested it here at my work successfully. however, when I get home I get the following message: "The modem failed to respond. Make sure it is properly connected and turned on. etc.." I have tried everything with no success. The modem is installed at COM4 port, interrupt at 9, address F800. Maximum speed is set at 115200.