modem woe's, oh woe is me :(

[Stiler]

Ok, so i was talking to tech, and my modem is installed on Com3, she was telling me to go to device manger and select ports (com and lpt) so i did that, and it only has listed: communications port COM1 and ECP Printer port (LPT1). She was telling me how i needed to set my com to the same settings as my modem. like the speed and everything, so since my modem is on com3 how do i do this?