x wrote:
Hi to everybody
I have a question: can I write in a worksheet data that the PC reads using
the rs232 port.
Are there programs for free? Need I to use Visual Basic, Pascal or Assebly?
TY
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I don't believe this is an Excel issue. To do what you want would
require support of the operating system. If XP supports it, then Excel
is happy and doesn't really know anything about what kind of physical
network connection you're using.

You'll need to convince XP to look across the RS232 as a networking
cable to another computer. I suspect that's possible to do, but I
haven't touched RS232 in a lot of years. You'd be further ahead to use
USB if you could, simply because RS232 is slow by comparison.

Good luck....

Bill