Hi Brandon
The problem is not happening on machine on site

It is using a Serial Crad that was inserted into the machine
(There is one serail port on the machine as standard but that is being used to drive a Touch screen monitor)

What are FIFI buffers and how do I turn them down of Off ?

Regards,
Gerard


>I use MSCOMM32.ocx extensively without failure on 98, XP, and Vista for bidirectional communication between computers via RF Transcievers. Are you sure this problem isn't limited to your comm port on your development machine?
>
>Are you using a USB Serial adapter or does your computer have a real comm port?
>
>Have you tried turning down or off FIFO buffers?