Post to Twitter?

Maybe I wasn't clear enough with my post. I own several domains through Godaddy. I just want to be able to use the Arduino to activate a script on my domain that I own and operate.

For example, I own www.savethehatch.com. I would like the Arduino to be able to activate the script www.savethehatch.com/script.php.

Is there a way to do this via my usb connection without buying an ethernet adapter?

Thank you.