LW basic is free! If you paid for it then you were scammed, read the thread below
http://www.gnutellaforums.com/open-discussion-topics/28751-membership-warning-beware-download-p2p-clients-only-thru-official-sites.html

You can download the latest basic version here
http://www.limewire.com/english/content/download.shtml

(LW Pro costs $18.88 for 6 months of updates & email support)