I'm in a similar situation to you, just purchased a 2009 S1 frame set, in my opinion the best looking S1 yet , sorry Rock, and will be building her from the ground up.
I'm particularly nervous about sizing the fork length which i might get my LBS to do and installing the cables for brakes and derailleurs.
Please provide us with ongoing cometary on how the build goes, i need as much help as i can get i feel!
All the best with it, look forward to seeing the finished product!