A quick browse of the article Excel as a Web Service Client shows the use of .XMLHTTP. Interesting, I’ve only experimented with sending strings over WinHTTP, I’ll have to check it out later.

Also, I’m guessing it’s possible to send binary files, like pictures, over the wire to my AutomateExcel.com server using winHTTP?

I’ll need the code for the VBA and the PHP side of things. If so it would be much nicer than some of the ftp hacks I’ve seen for VBA.

My starting point articles so far:
Post binary data to URL from WSH/ASP/VBA/VBScript
Chapter 38. Handling file uploads

Hopefully it’s just a matter of some minor tweaking to the two examples mixed with a couple hours of spare time.