Just a heads up on what happened to resolve this. I obtained a Radio
Shack USB to RS232 cable, installed the software from the radio shack
website and got it to work (after quite a bit of frustration). When I
went to update my Garmin 195 handheld it couldn't find it, turned out
to be the connection to the power plug. I had to take the cradle off
the power plug and screw it directly into the unit, then it updated
OK. I also updated my King KLN90B. So I am all up to date.

My KLN90B has a problem with some of the knobs, they don't quite do
what they are supposed to each time. I suppose it will have to go back
to King for a rebuild. Anyone know how to do THAT (call King and get
an RMA number I guess).

Thanks for all your help and especially they guy who suggested the
Radio Shack website.