Starforce is installed/run everytime you start the game from the CD.
You can find the Starforce removal tool here -
http://www.onlinesecurity-on.com/protect.phtml?c=55
This tool will remove the starforce drivers from your system, however, each time you start the game using the CD then they will reinstall again, so you need someway to remove the need for a CD.:hmm: Try Google.
Not too sure about the download version, as Starforce is basically checking that you have a authorized disc present, I assume that there's no disc to check on a D2D download. Strange.
Welcome to Subsim Matey.
And welcome back to SH3.