If anyone is looking for a good, cheap serial USB adapter, try this one http://www.amazon.com/StarTech-ICUSB2324-RS232-Serial-Adapter/dp/B000YB0NQG/ref=sr_1_2?ie=UTF8&qid=1339352457&sr=8-2 It uses FTDI controller chips (not the one that delivers flowers!) and I am using it to connect my Green Heron controller to DXBase under win7 x64. 73 Neal