if you mean when windows starts up then;
select tools, options, advanced, system startup and make sure the box 'run on system start up' DOESN'T have a tick in it.
if you mean the auto connect when you run limewire then;
select tools, options, connections and make sure the box 'connect on startup' DOESN'T have a tick in it.
6_pac i just spend 10 minutes typing that! so i thought i would post it anyways