I tried one from Haas from Floppy to USB, Converter, Floppy to USB Emulator, Conversion, Floppy Drive to USB, Floppy Drive and it worked good from last 2 years. priced at US$55 only.
Fair disclosure... Kwalityenterpri is actually linking to his website and he is the one selling the product that he linked to. His statement sort of sounded like he was a customer making a casual observation.... not so.
read his posts below--
http://www.cnczone.com/forums/haas_m...onversion.html
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2000 Haas VF-2 : Tormach PCNC1100 :OneCnc XR5 Pro