>>MSComm is free and come with Windows.
>>
>
>It must be some examples of using mscomm.ocx here in downloads ?
>
>Thks++ anyway :-)

Lots.
On the UT:

Serial communications with a COM port using MSCOMM - FAQ #7807
How do I determine the Comm ports available to MSCOMM - FAQ #7943
Basic Serial Communication with MSCOMM - Download #9336
Good practice in using MSCOMM.OCX in VFP - Download #9636

In the MSKB:

HOWTO: Send to the Serial Port Using Mscomm32.ocx - MSKB#Q139526
HOWTO: Receive from the Serial Port Using MScomm32.ocx - MSKB#Q140525
HOWTO: Transmit and Receive Binary Data using MSCOMM32 - MSKB#Q154741
HOWTO: Find Installed Modems with Visual FoxPro - MSKB#Q291535
INFO: Troubleshooting Tips for the MSComm Control - MSKB#Q192012
HOWTO: Capture the EOF Character with MSComm Control - MSKB#Q253257
HOWTO: Trap Control Characters Using the MSComm Control - MSKB#Q194923
PRB: Accessing WINMODEM with MSComm Control Can Hang Application - MSKB#Q198128