Thanks for all the suggestions.....may just have to go get an additional serial port put in. Peter, really appreciate your input!! I printed out your post and got as far as finding the "Ports" but it didn't tell me the mfg. or port #. My computer is a desktop, running XP. The USB port I am trying to...

I recently bought the silverlining software from cpap.com, and am having problems with it. I called cpap.com and was told that "we only sell it, we don't support it" and they suggested I come here for help. I don't have an open serial port so bought a usb>serial port cable my computer recognizes the...