I would first check if the machine still reads the designs from the disc - you will have to get someone to put a couple on a disc (in the correct format -HUS.) to do that, they may also be hard to find these days.
You can download True Sizer from the Wilcom website - for free. With this you can open a design, resize if necessary, and save it anywhere you like, even to a floppy disc. The reader/writer box would need to be compatable with your latest computer, because as Windows updates the new technology cannot read the old software. You don't always need to buy expensive from the machine shops either, I have found floppy reader/writer boxes from computer stores for a fraction of the price, just check the type of connection.
My Brother - similar age and uses floppies - doesn't like to read the designs sometimes, but I have a later model for embroidery, and love the older one for simple sewing more than the newer machine.