at vista inside contentindex does exist key with name start up delay,its only for xp at it seems
well i know and other way to start your pc faster :start>run>type msconfig,then between servise and tools is an option start up with programms that already are clik,well unclik all the useless like nero,acrobat reader,messeger,utorrent etc or any other programs that no need to start the pc ,at starting windows now will load less things