wp4fb

Hi, would appreciate help with making WP4FB work. I downloaded this lite version to try before i buy, see if it really does help me add fan pages etc so I installed it on my pc, FTP`d it to my domain went back to the login pannel on wordpress.com and also tried www.ads-software.com but i cant find how i activate this thing…. I am totally lost now. Im a first time wordpress user and i cant find anywhere i can obtain code or use plugins. Thanks in advance.