Hi,
Maybe asked(and answered) several times but is there a VB6 app that talks to an Arduino /w ethernetshield?
For example pushing a button on the arduino will lit a led in the VB app or the other way around pushing a VB commandbutton wil lit a LED connected to the Arduino board.
Grtz,
Paul 
people still use VB6? I thought that dinosaur died a painful death years ago.
To actually answer your question, the is no reason you couldn't program a server that will wait for the packet from the arduino. That will probably be your only option.
This sounds like a misunderstanding. You generally implement a SERVER on the Arduino, then send it whatever you want via a TCP/IP link. This can be anything. Has nothing to do with HTML or whatever. You can establich such links from any program on the PC. But maybe had not yet part of VB6...
This can easily be done with VB6 using Winsock. Client or Server, it doesn't really matter, it's however you want to write the code for the Arduino and the PC.