Help With Ports in Win 7

Hello All,
My first time here so I'm not sure this is right forum for this question.

First a little background:

System - Dell Inspiron 546, Windows 7 Home Premium x86 64 bit.

I'm an Engineer/Designer/Machinist and work with CAD/CAM programming. After I create the programs with the toolpaths for my CNC Macining Center I use a separate program to transfer the machine control data to the CNC.

Here is my dilemma - Win 7 is not compatable with the old 16 or 32 bit, file transfer program I had been using with XP and Vista. I have found 64 bit programs that are compatible but cannot get the computer and CNC to communicate.

The problem I'm having is, in the file transfer software I need to set the Parameters such a Comm Port, Baud Rate, etc. I cannot determine the port assignment for the usb connections. In XP and Vista they were Comm 4 and I could find that in Device Manager/Ports. Win 7 doesn't seem to have a listing for ports. How do I determine this.

Sorry for being so long winded, and Thanks in advance for any help.

Can't be both. Either your Windows install is x64=64-bit or x86=32-bit. You can dual boot with each version installed if you wish, however.

Right click on the install .exe for your old file transfer program. Compatibility tab. Set it to Vista or try XP too. Save settings. Install from it.

If it's on CD or DVD, copy contents to local HDD first.

I found out that I needed to install the usb adapter and driver. The listing for ports then showed up in device manager and on this particular machine usb's use port 3. Thanks for your help.