I use an 4GB flash voyager stick, and I want to create a unified installation that works on many pc-s, so whn I format it with hp tool I can't boot and nforce2 pc, but can so later on chipsets, and when I format it with pe2tousb and fat, I can boot and install XP, but cannot install vista, it says and error installation files are corupted or missing. Do I must add some files to the vista instalation or leave it default?