I achieved some limited degree of success last night with my USB to Serial 
adapter cable.

 Thanks to the excellent recommendation/endorsement from Paul Gates, KD3JF and 
Don Nesbitt, N4HH, I visited the I.O.Gear web-site and downloaded the 
USB-Serial Driver for the GUC232A cable.  
http://www.iogear.com/main.php?loc=dm

Installing the driver was just a little tricky; I had to uninstall the old 
driver (following instructions from the MS Windows Tech Support web-site).   I 
also downloaded the GIC232A Manual from I.O.Gear.  

The driver installed and showed up as "Prolific USB Serial".  Again following 
the instructions from the KIO2 manual, I conducted the Menu "PORT" test and 
"Eureka!" the radio responded to commands from the Hyper Terminal, perfectly.

Unfortunately, I labeled it a limited success because when I attempted to 
connect my K2 with my “Ham Radio Deluxe” software things did not run smoothly.  
There appeared to be a huge latency issue between HRD and the K2.  The full 
frequency from my K2 did not always show up on HRD and commands from the HRD to 
the K2 were delayed about 8-10 seconds.  After running HRD straight to a Serial 
input and experiencing a seamless interface this was disappointing. But alas 
that is something that I will work on with HRD and I really don’t consider that 
a major issue, as I know that I will work it out.  I have faith in Simon Brown 
and the HRD forum.

For what it may be worth it seemed that changing positions of the USB cable 
from one USB connection (on the back of the computer) and there by changing my 
COM Port settings gave me different results.  My system did not seem to like 
COM Port 3 or 4, but by moving to a different USB connection and changing to 
COM Port 5 and 6 showed very good results.  It may be worth a try.
The point is that the I.O.Gear GUC232A software worked.  For those individuals 
looking to get a USB to Serial Interface, I found a great deal from Amazon.com 
for the Cable and Software for $20 shipping included   
http://www.dealtime.com/xPC-Iogear_G_UC232A

73 Chuck
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