For some odd reason, the pixelpipe blog entry which gives details on how to set up Eye-Fi to work with pixelpipe seems to be a dead link now. http://webcache.googleusercontent.com/s ... google.com is the cached version of that page though and should have all the details you need.
I have heard about it somewhere theoretically,that pixel pipe works with the EyeFi, But practically never implemented. So, I don't have that much knowledge about it.