I have a 33,6K modem that installs right out of the box. I have a 56K that I have repeatedly tried to install but have no luck. It is recognized by win98 and all drivers are loaded; when I try to use it the message is always "your modem is not responding". Sometimes I get "port already open". I've tried all kinds of things but no go. I have the cd with drivers, it's a new Zoltrix (off brand I guess). The 33,6 always goes to com 2 and the 56K always goes to com 4.