I have buy the modem "U.S. Robotics Sportster 56K Voice Faxmodem" and I want to know how can I set my modem speed to 56K. Since, I had tried it in the Control Panel --> Modem --> General --> Content, I can only find that my modem can only connet to max. speed of 115200. What is the meaning of the "115200"? Moreover, when I connet to internet, I find that the connection speed of my modem is at most 33,600bps.