You were scammed you need to you need to call you credit card company and tel them you did not receive what you purchased. LimeWire basic is free and pro is $18.88 for pro and 6 months of upgrades. The link below will take you to the official site.
http://www.limewire.com/english/content/download.shtml
The link below will provide you with some information about the scam sites.
http://www.gnutellaforums.com/showth...threadid=28751 http://www.gnutellaforums.com/showth...threadid=44499