wanted melco software

Dear All , I bought last year a four head melco embroidery machine. I have just started using it and i am very happy. But the computer that i have bought with it , does not work anymore. Its take the floppy discs. The company that i bought it from has gone bust. I spoke to melco uk and they said not their problem and that i would have to buy new software . I have all the stock designs that i want. I only want to add lettering to the designs. CAN ANY ONE HELP ME PLEASE ,.
regards phil from swansea