Thanks! Script is good for cleaning already installed OS.
But if there is need to install OS, I prefer to delete crap from distributive and than install.
Vista_x86_RTM_SP2 original size = 2.76 Gb, without crap = 0.73 Gb
When installed, it takes 2.47 Gb on system drive (+ pagefile + hiberfil). After installing IE8 and performin full WU, it takes 3.4 Gb on system drive