hello and welcome to x10.
to upload your site via FTP first you have to have a FTP client (if your running on windows then it comes with it using IE, it might work for 7 but only only been able to get the FTP with 6). Once you have your client (i personally use filezilla but find one that works for you), login by puttin your cpanel website url, cpanel login aqnd password. once you load yo load that up put your files in "public_htiml"
after that your good to go.
hopefully that help

(btw. shouldn't this be either Site management or Teh Interwebz one of the two i think...)