why that can t installed vista need

why is that i can't installed vista? need help please

well i have a dell latitude d600 laptop and its 1.6Ghz and 1 gig ram and a 32mb video. when i run vista advisor it says i can run the Core of Windows vista.i have updated the bios of the computers too...now my question is when i try to installed windows vista.and its about to end it freezes and shows lines can someone help thanks

Windows Vista

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