Hi Lord good advice, I had the same problem as Tihsho when the Beta XP Pro 64bit first came out the Java that came packed with LW wouldnt load with the 64bit system. Had to downnload a 64bit compadable version from Java but I still couldnt install LW. I ended up having to go into C:/Programs/Limewire and deleating the Limewire file after I did that I was able to install Limewire. Do what The Lord said first if that does'nt work try deleating the file