[WriteLog] Serial Port Choppy CW

[W7RY]

Greetings.

I'm getting Writelog version 10.59D set up on a old IBM ThinkPad 390X
laptop 450Mhz and running Windows 2000.  It has a built in serial port.
When I use the serial port to send CW, it sounds choppy on some of the
characters. This is a fresh re-load of Windows 2000 and I downloaded all
of the updates from Microsoft.

I did a search of the archives and found some stuff dealing with the
parallel port sending choppy CW but found nothing about  the serial port
doing this.

Ideas?

Thanks and 73
Jim W7RY