装了VISTA RC1，如何让系统默认引导XP？
參考答案:1. right click computer, then select properties.
2. click "Advanced system settings",
3. you'll open the "Sysem Properties".
4. select the "Advanced" Tab
5. click "Settings" button at the "Starup and Recovery" panel
6. "Default operating system:" -> "Earlier Version of Windows"
