Hi,
my son stumbled over the network cable, and it got pulled out ^^.
Right, you can feed the google chart api with some measurement values and formatting data, and you will get back an image with the charted measurement data, which would hardly fit into the memory of the arduino.
It is also possible to send the data to a web server ( like here:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1268145499
), but I wanted an arduino as webserver 