1. Install a xp virtual pc
2. Start Virtual Machine
3. Install Guest Additions: Menu bar->Devices->Install Guest Additions...->Next->Note: Virtual Guest Additions is checked by default -> Install
4. Now observe Menu bar->Machine->Disable mouse integration, it is highlighted and not checked-This means mouse integration works well
(You will never use Right Ctrl to control mouse)
5. Check Menu bar->Machine->Auto-resize Guest Display, then the screen will be full
6. If you want to adjust the resolution manually, please do not check "Auto-resize Guest Display". Note: This will result the screen not full