Virtual serial port from Mac to Windows

Hello there,

I have started a little project using a teensy 3.1, GY-80 imu and a gps module uBLOXNEO-M8N. There is a software called u-center for analyzing gps data and much more from that uBLOXNEO sensor, the problem is that it only runs on windows. I can not figure out how to get the data over a serial port into my virtual machine. I have tested it on a windows system and it works fine.

My virtual machine is an oracle vm virtualbox manager, I have installed windows 7. In the settings of the virtual machine there is the option ports/serial ports/ , but there I don't know what should be the port mode and I also don't know the address and how to find out (Sorry I know this is a beginner question). Maybe I'm missing something else...

It would be awesome if somebody could help me here.

Best,
Paul