i'm not big fan of peer2peer tools because alot of spyware and advertisements etc. but i found one program (i'm not updated with those programs because i'm not interested on swapping files and also i have a 10Gb cap on my internet connection) that is simply amasing:
http://www.winmx.com
no spyware or advertising and the interface is great. also they have over 5millions members online? it beats the napster easy...
try it and let me know what you think.