[Dx4win] DX4Win and Yaesu FT100

[Bob & Janet]

I want to get my old rig working with DX4Win so we can have 2 radios 
going at an event coming up, but I can't get DX4Win to talk to the radio 
which is the Yaesu FT100.  I'm sure I had it working a long time ago 
(old version of DX4Win and old PC operating system), but choosing FT100 
off the radio menu in preferences (V9.0.4) just times out.  Does anyone 
have any tips that might help resolve the problem?

I have the correct RS232 mini-din plug
I have the default baud rate set to 4800
I have the right com port
I have tried various combinations of dtr and rts, but haven't found 
anything that works.

Thanks
Bob VP8LP