Sorry, sometimes I give vague answers because I'm not certain of the official reply.
If you install FC2.0 and you have never run FC (the CD version, which is the one that installs drivers) then you don't have to worry about it.
If you install FC2.0 over FC CD version that HAS been run, then you can use the SF driver removal tool to remove the SF drivers - I would would do so before installing FC2.0.
FC2.0 does use SF - it uses an online activation version of it, which does not use a disk driver.
FC 2.0 does not install SF drivers. Please check the FAQ - online activation only is used.
GG, I don't know if you read any of the other posts in the thread (including one of mine), but the question is what happens to the SF installed by FC 1.12?
I've got FC 1.12 installed and never had an issue, but I'm running a dedicated gaming rig, and can understand why some people wouldn't want to take the risk.
Edit: I see Teradhead beat me to it.