How Do You Open the USB port

Question

Okay so heres the thing....I Bought the Samsung Messager and i have the USB cable to connect the phone to my computer....okay cool. So i go in to connect it and it installs the software and everything but nothing happens. nothing is wrong with the port because i checked it in the device manager and i dont know where the USB port folder is located so maybe i can just drag and drop the files into there? I DONT KNOW. It's also not showing up in the My Computer section. maybe im looking at the wrong place;;idk.....any way i have Windows Vista so im so confused.