I have a used copy of omega 1.56 that I bought with a gerber edge. All the serial numbers are valid, I have the USB key. I also have a parallel port key, that the previous owner told me I needed to use, my local gerber distributor told me I do not need it, just the gerber USB key. I can't get the software working. Can anyone tell me what this key would be for and why I would need it? I am trying to upgrade to 5.0 but I need to get the installation numbers from the software. I am trying to avoid making a computer that has parallel ports and runs windows xp for no reason. I can't find anyone that has the correct computer setup, none have parallel ports and all have been non expansion type motherboards. I run all macs, so that is no help either. I was hoping to just invest in a new windows 7 computer and use omega 5.0 on that. Here are the photos of my keys and discs. The parallel port key has a five digit serial number, the USB key is absolutely gerber and is correct, the software serial number is also valid and has not been updated.