Yes trash the LW program folder! Also ... delete the LW Preferences folder found here: /Users/your_username/Library/Preferences/LimeWire

BTW get LW Basic first ... if you like it & can sort your issues out then later consider getting pro. Basic is free: http://www.limewire.com/english/content/download.shtml

BTW can you tell me about the question I asked above about your connection device?