Getting g-code from the computer to the cnc

[Swykore]

We are running a vmc6030 and experiencing some intermittent problems with the zip drive- typically while loading a program from the disk to the mem or the Fadal we will either get a message saying :cannot detect baud rate or simply that it cannot detect the disk drive....???

I am considering running a connection from the computer to the Fadal via the rs-232 port. My question is: Can I use the printer port from my computer?? I have read information that this can not be done due to voltage issues and / or the fact that the send and receive pins are crossed BUT I know a moldmaker who does run off the Printer Port with no problem. What is the correct way to do this????

Thanks in advance.
Dazed and confused!!!

[TR MFG]

dnc section of Fadal PDF