You do not HAVE to reboot your computer when the installation asks you to...
Just let that reboot window sit unattended , run the patch file (1.49) to remove the copy protection. Delete folder: "C:\Program Files\Larian Studios\Beyond Divinity\StarForce Driver Installation" and THEN only reboot your computer.
Starforce will not be installed. - I just tested it to confirm this.
P.S. blooduk - you are quick to jump on your high horse - i am sure that you could have figured this one out if you took a moment to think before you posted angry messages.