have a look at the USB ones at:
http://www.dontronics.com/diyk150.html
very simple, very cheap.
Cheers Don...
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Don McKenzie
E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics
USB to RS232 Converter that works http://www.dontronics.com/usb_232.html
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