Ignore the com port as it is no use for motor control, it is the parallel port youneed.
In device manager you have seen yours is called LPT1, as said it doesnt matter what Windows calls it as its the address Mach cares about. Look at the resources for the LPT port in device manager and you will find that, see pic.
Then enter that address in Mach like in pic.
You can use either port 1 or 2 address box in Mach but probably best to enter it into 1. When you are setting up the motors and inputs and outputs you need to eter the port number you chose in Mach so in the pic below it is port 1 but if you had entered the address in the port 2 box you would need to enter 2 but as said best sticking to port 1.
Hood