There is a cool .dll file you can download for KaZaa called KaZap that will turn the ads in the lower left hand corner into a utility program works perfectly if you follow the directions.
here’s the link http://members.lycos.co.uk/kazapdev
**note** if anyone can figure out how to get it to work in grokster let me know, i got it so it will remove the ads, but none of the utility options work.